Home / 728,866.71-1,093,615.83-391,513.77

Finding the Fourth Proportional to 728,866.71, 1,093,615.83 and 391,513.77

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Solution

The fourth proportional to 728,866.71, 1,093,615.83 and 391,513.77 is: 587,440.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,866.71 : 1,093,615.83 = 391,513.77 : x
  2. Step 2: Convert to fraction form
    728,866.71/1,093,615.83 = 391,513.77/x
  3. Step 3: Cross multiply
    728,866.71x = 1,093,615.83 × 391,513.77
  4. Step 4: Simplify right side
    728,866.71x = 428,165,656,534.98
  5. Step 5: Solve for x
    x = 428,165,656,534.98/728,866.71
  6. Step 6: Final answer
    x = 587,440.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.