Home / 1,271,988.69-1,755,580.86-728,124.49

Finding the Fourth Proportional to 1,271,988.69, 1,755,580.86 and 728,124.49

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Solution

The fourth proportional to 1,271,988.69, 1,755,580.86 and 728,124.49 is: 1,004,947.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,271,988.69 : 1,755,580.86 = 728,124.49 : x
  2. Step 2: Convert to fraction form
    1,271,988.69/1,755,580.86 = 728,124.49/x
  3. Step 3: Cross multiply
    1,271,988.69x = 1,755,580.86 × 728,124.49
  4. Step 4: Simplify right side
    1,271,988.69x = 1,278,281,415,876.95
  5. Step 5: Solve for x
    x = 1,278,281,415,876.95/1,271,988.69
  6. Step 6: Final answer
    x = 1,004,947.16

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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.