Home / 687,593.17-1,031,388.33-387,937.72

Finding the Fourth Proportional to 687,593.17, 1,031,388.33 and 387,937.72

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Solution

The fourth proportional to 687,593.17, 1,031,388.33 and 387,937.72 is: 581,905.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,593.17 : 1,031,388.33 = 387,937.72 : x
  2. Step 2: Convert to fraction form
    687,593.17/1,031,388.33 = 387,937.72/x
  3. Step 3: Cross multiply
    687,593.17x = 1,031,388.33 × 387,937.72
  4. Step 4: Simplify right side
    687,593.17x = 400,114,432,017.87
  5. Step 5: Solve for x
    x = 400,114,432,017.87/687,593.17
  6. Step 6: Final answer
    x = 581,905.77

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1.5x scale

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.