Home / 486,136.20-727,649.10-448,811.40

Finding the Fourth Proportional to 486,136.20, 727,649.10 and 448,811.40

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Solution

The fourth proportional to 486,136.20, 727,649.10 and 448,811.40 is: 671,781.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,136.20 : 727,649.10 = 448,811.40 : x
  2. Step 2: Convert to fraction form
    486,136.20/727,649.10 = 448,811.40/x
  3. Step 3: Cross multiply
    486,136.20x = 727,649.10 × 448,811.40
  4. Step 4: Simplify right side
    486,136.20x = 326,577,211,279.74
  5. Step 5: Solve for x
    x = 326,577,211,279.74/486,136.20
  6. Step 6: Final answer
    x = 671,781.31

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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.