Home / 643,191.08-963,500.22-386,882.16

Finding the Fourth Proportional to 643,191.08, 963,500.22 and 386,882.16

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Solution

The fourth proportional to 643,191.08, 963,500.22 and 386,882.16 is: 579,549.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,191.08 : 963,500.22 = 386,882.16 : x
  2. Step 2: Convert to fraction form
    643,191.08/963,500.22 = 386,882.16/x
  3. Step 3: Cross multiply
    643,191.08x = 963,500.22 × 386,882.16
  4. Step 4: Simplify right side
    643,191.08x = 372,761,046,274.08
  5. Step 5: Solve for x
    x = 372,761,046,274.08/643,191.08
  6. Step 6: Final answer
    x = 579,549.46

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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.