Home / 728,180.77-1,005,320.48-647,385.13

Finding the Fourth Proportional to 728,180.77, 1,005,320.48 and 647,385.13

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Solution

The fourth proportional to 728,180.77, 1,005,320.48 and 647,385.13 is: 893,774.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,180.77 : 1,005,320.48 = 647,385.13 : x
  2. Step 2: Convert to fraction form
    728,180.77/1,005,320.48 = 647,385.13/x
  3. Step 3: Cross multiply
    728,180.77x = 1,005,320.48 × 647,385.13
  4. Step 4: Simplify right side
    728,180.77x = 650,829,531,254.93
  5. Step 5: Solve for x
    x = 650,829,531,254.93/728,180.77
  6. Step 6: Final answer
    x = 893,774.68

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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.