Home / 861,776.20-1,189,460.73-499,141.63

Finding the Fourth Proportional to 861,776.20, 1,189,460.73 and 499,141.63

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Solution

The fourth proportional to 861,776.20, 1,189,460.73 and 499,141.63 is: 688,936.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,776.20 : 1,189,460.73 = 499,141.63 : x
  2. Step 2: Convert to fraction form
    861,776.20/1,189,460.73 = 499,141.63/x
  3. Step 3: Cross multiply
    861,776.20x = 1,189,460.73 × 499,141.63
  4. Step 4: Simplify right side
    861,776.20x = 593,709,367,593.19
  5. Step 5: Solve for x
    x = 593,709,367,593.19/861,776.20
  6. Step 6: Final answer
    x = 688,936.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.