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Finding the Fourth Proportional to 545,313.63, 817,248.72 and 418,469.14

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Solution

The fourth proportional to 545,313.63, 817,248.72 and 418,469.14 is: 627,149.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,313.63 : 817,248.72 = 418,469.14 : x
  2. Step 2: Convert to fraction form
    545,313.63/817,248.72 = 418,469.14/x
  3. Step 3: Cross multiply
    545,313.63x = 817,248.72 × 418,469.14
  4. Step 4: Simplify right side
    545,313.63x = 341,993,369,024.50
  5. Step 5: Solve for x
    x = 341,993,369,024.50/545,313.63
  6. Step 6: Final answer
    x = 627,149.86

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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.