Home / 643,944.20-966,089.10-574,305.80

Finding the Fourth Proportional to 643,944.20, 966,089.10 and 574,305.80

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Solution

The fourth proportional to 643,944.20, 966,089.10 and 574,305.80 is: 861,612.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,944.20 : 966,089.10 = 574,305.80 : x
  2. Step 2: Convert to fraction form
    643,944.20/966,089.10 = 574,305.80/x
  3. Step 3: Cross multiply
    643,944.20x = 966,089.10 × 574,305.80
  4. Step 4: Simplify right side
    643,944.20x = 554,830,573,446.78
  5. Step 5: Solve for x
    x = 554,830,573,446.78/643,944.20
  6. Step 6: Final answer
    x = 861,612.81

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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.