Home / 658,122.30-985,215.15-391,745.70

Finding the Fourth Proportional to 658,122.30, 985,215.15 and 391,745.70

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Solution

The fourth proportional to 658,122.30, 985,215.15 and 391,745.70 is: 586,446.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,122.30 : 985,215.15 = 391,745.70 : x
  2. Step 2: Convert to fraction form
    658,122.30/985,215.15 = 391,745.70/x
  3. Step 3: Cross multiply
    658,122.30x = 985,215.15 × 391,745.70
  4. Step 4: Simplify right side
    658,122.30x = 385,953,798,587.36
  5. Step 5: Solve for x
    x = 385,953,798,587.36/658,122.30
  6. Step 6: Final answer
    x = 586,446.92

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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.