Home / 1,129,460,019.60-1,694,190,029.40-517,239,987.60

Finding the Fourth Proportional to 1,129,460,019.60, 1,694,190,029.40 and 517,239,987.60

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Solution

The fourth proportional to 1,129,460,019.60, 1,694,190,029.40 and 517,239,987.60 is: 775,859,981.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129,460,019.60 : 1,694,190,029.40 = 517,239,987.60 : x
  2. Step 2: Convert to fraction form
    1,129,460,019.60/1,694,190,029.40 = 517,239,987.60/x
  3. Step 3: Cross multiply
    1,129,460,019.60x = 1,694,190,029.40 × 517,239,987.60
  4. Step 4: Simplify right side
    1,129,460,019.60x = 876,302,829,798,899,712
  5. Step 5: Solve for x
    x = 876,302,829,798,899,712/1,129,460,019.60
  6. Step 6: Final answer
    x = 775,859,981.40

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Half scale
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Double scale
Find fourth proportional to 1,129,460,020.60, 1,694,190,030.90 and 517,239,988.60
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.