Home / 651,331.60-976,997.40-438,755.20

Finding the Fourth Proportional to 651,331.60, 976,997.40 and 438,755.20

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Solution

The fourth proportional to 651,331.60, 976,997.40 and 438,755.20 is: 658,132.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,331.60 : 976,997.40 = 438,755.20 : x
  2. Step 2: Convert to fraction form
    651,331.60/976,997.40 = 438,755.20/x
  3. Step 3: Cross multiply
    651,331.60x = 976,997.40 × 438,755.20
  4. Step 4: Simplify right side
    651,331.60x = 428,662,689,636.48
  5. Step 5: Solve for x
    x = 428,662,689,636.48/651,331.60
  6. Step 6: Final answer
    x = 658,132.80

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Double scale
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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.