Home / 861,970.88-1,189,519.80-499,604.93

Finding the Fourth Proportional to 861,970.88, 1,189,519.80 and 499,604.93

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Solution

The fourth proportional to 861,970.88, 1,189,519.80 and 499,604.93 is: 689,454.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,970.88 : 1,189,519.80 = 499,604.93 : x
  2. Step 2: Convert to fraction form
    861,970.88/1,189,519.80 = 499,604.93/x
  3. Step 3: Cross multiply
    861,970.88x = 1,189,519.80 × 499,604.93
  4. Step 4: Simplify right side
    861,970.88x = 594,289,955,862.47
  5. Step 5: Solve for x
    x = 594,289,955,862.47/861,970.88
  6. Step 6: Final answer
    x = 689,454.79

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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.