Home / 687,593.67-1,031,389.08-387,938.22

Finding the Fourth Proportional to 687,593.67, 1,031,389.08 and 387,938.22

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Solution

The fourth proportional to 687,593.67, 1,031,389.08 and 387,938.22 is: 581,906.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,593.67 : 1,031,389.08 = 387,938.22 : x
  2. Step 2: Convert to fraction form
    687,593.67/1,031,389.08 = 387,938.22/x
  3. Step 3: Cross multiply
    687,593.67x = 1,031,389.08 × 387,938.22
  4. Step 4: Simplify right side
    687,593.67x = 400,115,238,665.69
  5. Step 5: Solve for x
    x = 400,115,238,665.69/687,593.67
  6. Step 6: Final answer
    x = 581,906.52

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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.