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Finding the Fourth Proportional to 664,703.20, 996,939.60 and 243,762.40

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Solution

The fourth proportional to 664,703.20, 996,939.60 and 243,762.40 is: 365,601.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,703.20 : 996,939.60 = 243,762.40 : x
  2. Step 2: Convert to fraction form
    664,703.20/996,939.60 = 243,762.40/x
  3. Step 3: Cross multiply
    664,703.20x = 996,939.60 × 243,762.40
  4. Step 4: Simplify right side
    664,703.20x = 243,016,389,551.04
  5. Step 5: Solve for x
    x = 243,016,389,551.04/664,703.20
  6. Step 6: Final answer
    x = 365,601.35

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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.