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Finding the Fourth Proportional to 519,494.40, 779,241.60 and 498,499.20

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Solution

The fourth proportional to 519,494.40, 779,241.60 and 498,499.20 is: 747,748.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,494.40 : 779,241.60 = 498,499.20 : x
  2. Step 2: Convert to fraction form
    519,494.40/779,241.60 = 498,499.20/x
  3. Step 3: Cross multiply
    519,494.40x = 779,241.60 × 498,499.20
  4. Step 4: Simplify right side
    519,494.40x = 388,451,314,206.72
  5. Step 5: Solve for x
    x = 388,451,314,206.72/519,494.40
  6. Step 6: Final answer
    x = 747,748.80

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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.