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Finding the Fourth Proportional to 389,397.87, 580,659.59 and 375,521.13

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Solution

The fourth proportional to 389,397.87, 580,659.59 and 375,521.13 is: 559,966.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,397.87 : 580,659.59 = 375,521.13 : x
  2. Step 2: Convert to fraction form
    389,397.87/580,659.59 = 375,521.13/x
  3. Step 3: Cross multiply
    389,397.87x = 580,659.59 × 375,521.13
  4. Step 4: Simplify right side
    389,397.87x = 218,049,946,320.94
  5. Step 5: Solve for x
    x = 218,049,946,320.94/389,397.87
  6. Step 6: Final answer
    x = 559,966.97

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.