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Finding the Fourth Proportional to 695,998.53, 960,545.39 and 390,126.87

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Solution

The fourth proportional to 695,998.53, 960,545.39 and 390,126.87 is: 538,412.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,998.53 : 960,545.39 = 390,126.87 : x
  2. Step 2: Convert to fraction form
    695,998.53/960,545.39 = 390,126.87/x
  3. Step 3: Cross multiply
    695,998.53x = 960,545.39 × 390,126.87
  4. Step 4: Simplify right side
    695,998.53x = 374,734,564,543.00
  5. Step 5: Solve for x
    x = 374,734,564,543.00/695,998.53
  6. Step 6: Final answer
    x = 538,412.87

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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.