Home / 558,416.70-837,625.11-390,265.44

Finding the Fourth Proportional to 558,416.70, 837,625.11 and 390,265.44

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Solution

The fourth proportional to 558,416.70, 837,625.11 and 390,265.44 is: 585,398.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,416.70 : 837,625.11 = 390,265.44 : x
  2. Step 2: Convert to fraction form
    558,416.70/837,625.11 = 390,265.44/x
  3. Step 3: Cross multiply
    558,416.70x = 837,625.11 × 390,265.44
  4. Step 4: Simplify right side
    558,416.70x = 326,896,132,109.20
  5. Step 5: Solve for x
    x = 326,896,132,109.20/558,416.70
  6. Step 6: Final answer
    x = 585,398.20

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Similar ratio
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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.