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Finding the Fourth Proportional to 615,128.85, 922,250.39 and 377,981.55

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Solution

The fourth proportional to 615,128.85, 922,250.39 and 377,981.55 is: 566,700.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,128.85 : 922,250.39 = 377,981.55 : x
  2. Step 2: Convert to fraction form
    615,128.85/922,250.39 = 377,981.55/x
  3. Step 3: Cross multiply
    615,128.85x = 922,250.39 × 377,981.55
  4. Step 4: Simplify right side
    615,128.85x = 348,593,630,010.40
  5. Step 5: Solve for x
    x = 348,593,630,010.40/615,128.85
  6. Step 6: Final answer
    x = 566,700.18

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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.