Home / 861,239.88-1,187,279.16-605,798.28

Finding the Fourth Proportional to 861,239.88, 1,187,279.16 and 605,798.28

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Solution

The fourth proportional to 861,239.88, 1,187,279.16 and 605,798.28 is: 835,135.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,239.88 : 1,187,279.16 = 605,798.28 : x
  2. Step 2: Convert to fraction form
    861,239.88/1,187,279.16 = 605,798.28/x
  3. Step 3: Cross multiply
    861,239.88x = 1,187,279.16 × 605,798.28
  4. Step 4: Simplify right side
    861,239.88x = 719,251,673,007.85
  5. Step 5: Solve for x
    x = 719,251,673,007.85/861,239.88
  6. Step 6: Final answer
    x = 835,135.12

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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.