Home / 1,121,292,001.60-1,681,938,002.40-662,126,977.60

Finding the Fourth Proportional to 1,121,292,001.60, 1,681,938,002.40 and 662,126,977.60

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Solution

The fourth proportional to 1,121,292,001.60, 1,681,938,002.40 and 662,126,977.60 is: 993,190,466.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,292,001.60 : 1,681,938,002.40 = 662,126,977.60 : x
  2. Step 2: Convert to fraction form
    1,121,292,001.60/1,681,938,002.40 = 662,126,977.60/x
  3. Step 3: Cross multiply
    1,121,292,001.60x = 1,681,938,002.40 × 662,126,977.60
  4. Step 4: Simplify right side
    1,121,292,001.60x = 1,113,656,526,039,693,696
  5. Step 5: Solve for x
    x = 1,113,656,526,039,693,696/1,121,292,001.60
  6. Step 6: Final answer
    x = 993,190,466.40

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Half scale
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Double scale
Find fourth proportional to 1,121,292,002.60, 1,681,938,003.90 and 662,126,978.60
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.