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Finding the Fourth Proportional to 663,251.84, 915,027.71 and 408,160.16

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Solution

The fourth proportional to 663,251.84, 915,027.71 and 408,160.16 is: 563,101.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,251.84 : 915,027.71 = 408,160.16 : x
  2. Step 2: Convert to fraction form
    663,251.84/915,027.71 = 408,160.16/x
  3. Step 3: Cross multiply
    663,251.84x = 915,027.71 × 408,160.16
  4. Step 4: Simplify right side
    663,251.84x = 373,477,853,333.45
  5. Step 5: Solve for x
    x = 373,477,853,333.45/663,251.84
  6. Step 6: Final answer
    x = 563,101.12

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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.