Home / 1,187,891.28-1,781,909.82-477,918.72

Finding the Fourth Proportional to 1,187,891.28, 1,781,909.82 and 477,918.72

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Solution

The fourth proportional to 1,187,891.28, 1,781,909.82 and 477,918.72 is: 716,907.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,891.28 : 1,781,909.82 = 477,918.72 : x
  2. Step 2: Convert to fraction form
    1,187,891.28/1,781,909.82 = 477,918.72/x
  3. Step 3: Cross multiply
    1,187,891.28x = 1,781,909.82 × 477,918.72
  4. Step 4: Simplify right side
    1,187,891.28x = 851,608,060,329.83
  5. Step 5: Solve for x
    x = 851,608,060,329.83/1,187,891.28
  6. Step 6: Final answer
    x = 716,907.41

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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.