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Finding the Fourth Proportional to 478,600.40, 717,900.60 and 291,976.40

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Solution

The fourth proportional to 478,600.40, 717,900.60 and 291,976.40 is: 437,964.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,600.40 : 717,900.60 = 291,976.40 : x
  2. Step 2: Convert to fraction form
    478,600.40/717,900.60 = 291,976.40/x
  3. Step 3: Cross multiply
    478,600.40x = 717,900.60 × 291,976.40
  4. Step 4: Simplify right side
    478,600.40x = 209,610,032,745.84
  5. Step 5: Solve for x
    x = 209,610,032,745.84/478,600.40
  6. Step 6: Final answer
    x = 437,964.60

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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.