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Finding the Fourth Proportional to 507,906.40, 761,859.60 and 498,575.20

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Solution

The fourth proportional to 507,906.40, 761,859.60 and 498,575.20 is: 747,862.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,906.40 : 761,859.60 = 498,575.20 : x
  2. Step 2: Convert to fraction form
    507,906.40/761,859.60 = 498,575.20/x
  3. Step 3: Cross multiply
    507,906.40x = 761,859.60 × 498,575.20
  4. Step 4: Simplify right side
    507,906.40x = 379,844,302,441.92
  5. Step 5: Solve for x
    x = 379,844,302,441.92/507,906.40
  6. Step 6: Final answer
    x = 747,862.80

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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.