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Finding the Fourth Proportional to 579,927,612.80, 869,891,419.20 and 557,632,265.60

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Solution

The fourth proportional to 579,927,612.80, 869,891,419.20 and 557,632,265.60 is: 836,448,398.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,927,612.80 : 869,891,419.20 = 557,632,265.60 : x
  2. Step 2: Convert to fraction form
    579,927,612.80/869,891,419.20 = 557,632,265.60/x
  3. Step 3: Cross multiply
    579,927,612.80x = 869,891,419.20 × 557,632,265.60
  4. Step 4: Simplify right side
    579,927,612.80x = 485,079,522,914,495,360
  5. Step 5: Solve for x
    x = 485,079,522,914,495,360/579,927,612.80
  6. Step 6: Final answer
    x = 836,448,398.40

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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.