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Finding the Fourth Proportional to 664,374.60, 996,561.90 and 243,595.80

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Solution

The fourth proportional to 664,374.60, 996,561.90 and 243,595.80 is: 365,393.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,374.60 : 996,561.90 = 243,595.80 : x
  2. Step 2: Convert to fraction form
    664,374.60/996,561.90 = 243,595.80/x
  3. Step 3: Cross multiply
    664,374.60x = 996,561.90 × 243,595.80
  4. Step 4: Simplify right side
    664,374.60x = 242,758,293,280.02
  5. Step 5: Solve for x
    x = 242,758,293,280.02/664,374.60
  6. Step 6: Final answer
    x = 365,393.70

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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.