Home / 728,180.52-1,005,320.14-647,384.88

Finding the Fourth Proportional to 728,180.52, 1,005,320.14 and 647,384.88

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Solution

The fourth proportional to 728,180.52, 1,005,320.14 and 647,384.88 is: 893,774.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,180.52 : 1,005,320.14 = 647,384.88 : x
  2. Step 2: Convert to fraction form
    728,180.52/1,005,320.14 = 647,384.88/x
  3. Step 3: Cross multiply
    728,180.52x = 1,005,320.14 × 647,384.88
  4. Step 4: Simplify right side
    728,180.52x = 650,829,056,577.02
  5. Step 5: Solve for x
    x = 650,829,056,577.02/728,180.52
  6. Step 6: Final answer
    x = 893,774.33

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1.5x scale

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.