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Finding the Fourth Proportional to 656,430.40, 984,645.60 and 432,092.80

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Solution

The fourth proportional to 656,430.40, 984,645.60 and 432,092.80 is: 648,139.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,430.40 : 984,645.60 = 432,092.80 : x
  2. Step 2: Convert to fraction form
    656,430.40/984,645.60 = 432,092.80/x
  3. Step 3: Cross multiply
    656,430.40x = 984,645.60 × 432,092.80
  4. Step 4: Simplify right side
    656,430.40x = 425,458,274,311.68
  5. Step 5: Solve for x
    x = 425,458,274,311.68/656,430.40
  6. Step 6: Final answer
    x = 648,139.20

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Similar ratio
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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.