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Finding the Fourth Proportional to 615,226.64, 923,047.76 and 387,693.60

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Solution

The fourth proportional to 615,226.64, 923,047.76 and 387,693.60 is: 581,671.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,226.64 : 923,047.76 = 387,693.60 : x
  2. Step 2: Convert to fraction form
    615,226.64/923,047.76 = 387,693.60/x
  3. Step 3: Cross multiply
    615,226.64x = 923,047.76 × 387,693.60
  4. Step 4: Simplify right side
    615,226.64x = 357,859,709,046.34
  5. Step 5: Solve for x
    x = 357,859,709,046.34/615,226.64
  6. Step 6: Final answer
    x = 581,671.35

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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.