Home / 664,721.20-996,966.60-243,780.40

Finding the Fourth Proportional to 664,721.20, 996,966.60 and 243,780.40

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Solution

The fourth proportional to 664,721.20, 996,966.60 and 243,780.40 is: 365,628.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,721.20 : 996,966.60 = 243,780.40 : x
  2. Step 2: Convert to fraction form
    664,721.20/996,966.60 = 243,780.40/x
  3. Step 3: Cross multiply
    664,721.20x = 996,966.60 × 243,780.40
  4. Step 4: Simplify right side
    664,721.20x = 243,040,916,534.64
  5. Step 5: Solve for x
    x = 243,040,916,534.64/664,721.20
  6. Step 6: Final answer
    x = 365,628.35

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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.