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Finding the Fourth Proportional to 509,520.40, 764,280.60 and 501,647.20

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Solution

The fourth proportional to 509,520.40, 764,280.60 and 501,647.20 is: 752,470.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,520.40 : 764,280.60 = 501,647.20 : x
  2. Step 2: Convert to fraction form
    509,520.40/764,280.60 = 501,647.20/x
  3. Step 3: Cross multiply
    509,520.40x = 764,280.60 × 501,647.20
  4. Step 4: Simplify right side
    509,520.40x = 383,399,223,004.32
  5. Step 5: Solve for x
    x = 383,399,223,004.32/509,520.40
  6. Step 6: Final answer
    x = 752,470.80

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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.