Home / 487,962.40-731,943.60-188,456.80

Finding the Fourth Proportional to 487,962.40, 731,943.60 and 188,456.80

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Solution

The fourth proportional to 487,962.40, 731,943.60 and 188,456.80 is: 282,685.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,962.40 : 731,943.60 = 188,456.80 : x
  2. Step 2: Convert to fraction form
    487,962.40/731,943.60 = 188,456.80/x
  3. Step 3: Cross multiply
    487,962.40x = 731,943.60 × 188,456.80
  4. Step 4: Simplify right side
    487,962.40x = 137,939,748,636.48
  5. Step 5: Solve for x
    x = 137,939,748,636.48/487,962.40
  6. Step 6: Final answer
    x = 282,685.20

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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.