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Finding the Fourth Proportional to 551,575.05, 761,262.15 and 515,555.16

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Solution

The fourth proportional to 551,575.05, 761,262.15 and 515,555.16 is: 711,548.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,575.05 : 761,262.15 = 515,555.16 : x
  2. Step 2: Convert to fraction form
    551,575.05/761,262.15 = 515,555.16/x
  3. Step 3: Cross multiply
    551,575.05x = 761,262.15 × 515,555.16
  4. Step 4: Simplify right side
    551,575.05x = 392,472,629,545.19
  5. Step 5: Solve for x
    x = 392,472,629,545.19/551,575.05
  6. Step 6: Final answer
    x = 711,548.92

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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.