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Finding the Fourth Proportional to 664,897.60, 997,346.40 and 452,321.20

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Solution

The fourth proportional to 664,897.60, 997,346.40 and 452,321.20 is: 678,481.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,897.60 : 997,346.40 = 452,321.20 : x
  2. Step 2: Convert to fraction form
    664,897.60/997,346.40 = 452,321.20/x
  3. Step 3: Cross multiply
    664,897.60x = 997,346.40 × 452,321.20
  4. Step 4: Simplify right side
    664,897.60x = 451,120,920,463.68
  5. Step 5: Solve for x
    x = 451,120,920,463.68/664,897.60
  6. Step 6: Final answer
    x = 678,481.80

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Half scale
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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.