Home / 687,454.70-1,031,180.22-387,799.25

Finding the Fourth Proportional to 687,454.70, 1,031,180.22 and 387,799.25

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Solution

The fourth proportional to 687,454.70, 1,031,180.22 and 387,799.25 is: 581,697.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,454.70 : 1,031,180.22 = 387,799.25 : x
  2. Step 2: Convert to fraction form
    687,454.70/1,031,180.22 = 387,799.25/x
  3. Step 3: Cross multiply
    687,454.70x = 1,031,180.22 × 387,799.25
  4. Step 4: Simplify right side
    687,454.70x = 399,890,910,774.93
  5. Step 5: Solve for x
    x = 399,890,910,774.93/687,454.70
  6. Step 6: Final answer
    x = 581,697.84

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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.