Home / 643,933.20-966,337.20-359,623.20

Finding the Fourth Proportional to 643,933.20, 966,337.20 and 359,623.20

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Solution

The fourth proportional to 643,933.20, 966,337.20 and 359,623.20 is: 539,679.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,933.20 : 966,337.20 = 359,623.20 : x
  2. Step 2: Convert to fraction form
    643,933.20/966,337.20 = 359,623.20/x
  3. Step 3: Cross multiply
    643,933.20x = 966,337.20 × 359,623.20
  4. Step 4: Simplify right side
    643,933.20x = 347,517,276,143.04
  5. Step 5: Solve for x
    x = 347,517,276,143.04/643,933.20
  6. Step 6: Final answer
    x = 539,679.08

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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.