Home / 687,545.65-1,031,331.80-238,281.31

Finding the Fourth Proportional to 687,545.65, 1,031,331.80 and 238,281.31

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Solution

The fourth proportional to 687,545.65, 1,031,331.80 and 238,281.31 is: 357,426.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,545.65 : 1,031,331.80 = 238,281.31 : x
  2. Step 2: Convert to fraction form
    687,545.65/1,031,331.80 = 238,281.31/x
  3. Step 3: Cross multiply
    687,545.65x = 1,031,331.80 × 238,281.31
  4. Step 4: Simplify right side
    687,545.65x = 245,747,092,348.66
  5. Step 5: Solve for x
    x = 245,747,092,348.66/687,545.65
  6. Step 6: Final answer
    x = 357,426.58

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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.