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Finding the Fourth Proportional to 615,168,086.40, 922,752,129.60 and 323,636,515.20

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Solution

The fourth proportional to 615,168,086.40, 922,752,129.60 and 323,636,515.20 is: 485,454,772.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,168,086.40 : 922,752,129.60 = 323,636,515.20 : x
  2. Step 2: Convert to fraction form
    615,168,086.40/922,752,129.60 = 323,636,515.20/x
  3. Step 3: Cross multiply
    615,168,086.40x = 922,752,129.60 × 323,636,515.20
  4. Step 4: Simplify right side
    615,168,086.40x = 298,636,283,617,122,752
  5. Step 5: Solve for x
    x = 298,636,283,617,122,752/615,168,086.40
  6. Step 6: Final answer
    x = 485,454,772.80

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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.