Home / 861,001.64-1,187,784.71-555,176.26

Finding the Fourth Proportional to 861,001.64, 1,187,784.71 and 555,176.26

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Solution

The fourth proportional to 861,001.64, 1,187,784.71 and 555,176.26 is: 765,886.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,001.64 : 1,187,784.71 = 555,176.26 : x
  2. Step 2: Convert to fraction form
    861,001.64/1,187,784.71 = 555,176.26/x
  3. Step 3: Cross multiply
    861,001.64x = 1,187,784.71 × 555,176.26
  4. Step 4: Simplify right side
    861,001.64x = 659,429,867,237.64
  5. Step 5: Solve for x
    x = 659,429,867,237.64/861,001.64
  6. Step 6: Final answer
    x = 765,886.89

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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.