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Finding the Fourth Proportional to 487,546.40, 731,319.60 and 444,000.80

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Solution

The fourth proportional to 487,546.40, 731,319.60 and 444,000.80 is: 666,001.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,546.40 : 731,319.60 = 444,000.80 : x
  2. Step 2: Convert to fraction form
    487,546.40/731,319.60 = 444,000.80/x
  3. Step 3: Cross multiply
    487,546.40x = 731,319.60 × 444,000.80
  4. Step 4: Simplify right side
    487,546.40x = 324,706,487,455.68
  5. Step 5: Solve for x
    x = 324,706,487,455.68/487,546.40
  6. Step 6: Final answer
    x = 666,001.20

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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.