Home / 869,162,678.30-1,303,744,017.45-665,089,334.30

Finding the Fourth Proportional to 869,162,678.30, 1,303,744,017.45 and 665,089,334.30

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Solution

The fourth proportional to 869,162,678.30, 1,303,744,017.45 and 665,089,334.30 is: 997,634,001.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,162,678.30 : 1,303,744,017.45 = 665,089,334.30 : x
  2. Step 2: Convert to fraction form
    869,162,678.30/1,303,744,017.45 = 665,089,334.30/x
  3. Step 3: Cross multiply
    869,162,678.30x = 1,303,744,017.45 × 665,089,334.30
  4. Step 4: Simplify right side
    869,162,678.30x = 867,106,240,663,428,096
  5. Step 5: Solve for x
    x = 867,106,240,663,428,096/869,162,678.30
  6. Step 6: Final answer
    x = 997,634,001.45

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Double scale
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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.