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Finding the Fourth Proportional to 664,322.60, 996,483.90 and 243,543.80

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Solution

The fourth proportional to 664,322.60, 996,483.90 and 243,543.80 is: 365,315.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,322.60 : 996,483.90 = 243,543.80 : x
  2. Step 2: Convert to fraction form
    664,322.60/996,483.90 = 243,543.80/x
  3. Step 3: Cross multiply
    664,322.60x = 996,483.90 × 243,543.80
  4. Step 4: Simplify right side
    664,322.60x = 242,687,475,644.82
  5. Step 5: Solve for x
    x = 242,687,475,644.82/664,322.60
  6. Step 6: Final answer
    x = 365,315.70

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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.