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Finding the Fourth Proportional to 756,610.80, 1,044,130 and 417,091.20

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Solution

The fourth proportional to 756,610.80, 1,044,130 and 417,091.20 is: 575,589.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,610.80 : 1,044,130 = 417,091.20 : x
  2. Step 2: Convert to fraction form
    756,610.80/1,044,130 = 417,091.20/x
  3. Step 3: Cross multiply
    756,610.80x = 1,044,130 × 417,091.20
  4. Step 4: Simplify right side
    756,610.80x = 435,497,434,656
  5. Step 5: Solve for x
    x = 435,497,434,656/756,610.80
  6. Step 6: Final answer
    x = 575,589.77

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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.