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Finding the Fourth Proportional to 515,519.40, 773,279.10 and 365,928.60

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Solution

The fourth proportional to 515,519.40, 773,279.10 and 365,928.60 is: 548,892.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,519.40 : 773,279.10 = 365,928.60 : x
  2. Step 2: Convert to fraction form
    515,519.40/773,279.10 = 365,928.60/x
  3. Step 3: Cross multiply
    515,519.40x = 773,279.10 × 365,928.60
  4. Step 4: Simplify right side
    515,519.40x = 282,964,938,472.26
  5. Step 5: Solve for x
    x = 282,964,938,472.26/515,519.40
  6. Step 6: Final answer
    x = 548,892.90

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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.