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Finding the Fourth Proportional to 615,132.10, 922,698.15 and 515,404.90

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Solution

The fourth proportional to 615,132.10, 922,698.15 and 515,404.90 is: 773,107.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,132.10 : 922,698.15 = 515,404.90 : x
  2. Step 2: Convert to fraction form
    615,132.10/922,698.15 = 515,404.90/x
  3. Step 3: Cross multiply
    615,132.10x = 922,698.15 × 515,404.90
  4. Step 4: Simplify right side
    615,132.10x = 475,563,147,730.94
  5. Step 5: Solve for x
    x = 475,563,147,730.94/615,132.10
  6. Step 6: Final answer
    x = 773,107.35

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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.