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Finding the Fourth Proportional to 615,066.90, 922,600.35 and 447,105.30

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Solution

The fourth proportional to 615,066.90, 922,600.35 and 447,105.30 is: 670,657.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,066.90 : 922,600.35 = 447,105.30 : x
  2. Step 2: Convert to fraction form
    615,066.90/922,600.35 = 447,105.30/x
  3. Step 3: Cross multiply
    615,066.90x = 922,600.35 × 447,105.30
  4. Step 4: Simplify right side
    615,066.90x = 412,499,506,266.86
  5. Step 5: Solve for x
    x = 412,499,506,266.86/615,066.90
  6. Step 6: Final answer
    x = 670,657.95

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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.