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Finding the Fourth Proportional to 664,526.80, 996,790.20 and 243,966.70

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Solution

The fourth proportional to 664,526.80, 996,790.20 and 243,966.70 is: 365,950.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,526.80 : 996,790.20 = 243,966.70 : x
  2. Step 2: Convert to fraction form
    664,526.80/996,790.20 = 243,966.70/x
  3. Step 3: Cross multiply
    664,526.80x = 996,790.20 × 243,966.70
  4. Step 4: Simplify right side
    664,526.80x = 243,183,615,686.34
  5. Step 5: Solve for x
    x = 243,183,615,686.34/664,526.80
  6. Step 6: Final answer
    x = 365,950.05

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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.