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Finding the Fourth Proportional to 615,989.79, 850,056.86 and 344,061.66

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Solution

The fourth proportional to 615,989.79, 850,056.86 and 344,061.66 is: 474,800.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,989.79 : 850,056.86 = 344,061.66 : x
  2. Step 2: Convert to fraction form
    615,989.79/850,056.86 = 344,061.66/x
  3. Step 3: Cross multiply
    615,989.79x = 850,056.86 × 344,061.66
  4. Step 4: Simplify right side
    615,989.79x = 292,471,974,345.99
  5. Step 5: Solve for x
    x = 292,471,974,345.99/615,989.79
  6. Step 6: Final answer
    x = 474,800.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.