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Finding the Fourth Proportional to 545,891.90, 817,839.93 and 395,760.38

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Solution

The fourth proportional to 545,891.90, 817,839.93 and 395,760.38 is: 592,917.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,891.90 : 817,839.93 = 395,760.38 : x
  2. Step 2: Convert to fraction form
    545,891.90/817,839.93 = 395,760.38/x
  3. Step 3: Cross multiply
    545,891.90x = 817,839.93 × 395,760.38
  4. Step 4: Simplify right side
    545,891.90x = 323,668,641,475.97
  5. Step 5: Solve for x
    x = 323,668,641,475.97/545,891.90
  6. Step 6: Final answer
    x = 592,917.10

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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.