Home / 486,131.40-729,853.20-386,404.20

Finding the Fourth Proportional to 486,131.40, 729,853.20 and 386,404.20

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Solution

The fourth proportional to 486,131.40, 729,853.20 and 386,404.20 is: 580,127.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,131.40 : 729,853.20 = 386,404.20 : x
  2. Step 2: Convert to fraction form
    486,131.40/729,853.20 = 386,404.20/x
  3. Step 3: Cross multiply
    486,131.40x = 729,853.20 × 386,404.20
  4. Step 4: Simplify right side
    486,131.40x = 282,018,341,863.44
  5. Step 5: Solve for x
    x = 282,018,341,863.44/486,131.40
  6. Step 6: Final answer
    x = 580,127.80

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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.