Home / 728,730.95-1,005,650.24-406,432.76

Finding the Fourth Proportional to 728,730.95, 1,005,650.24 and 406,432.76

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Solution

The fourth proportional to 728,730.95, 1,005,650.24 and 406,432.76 is: 560,878.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,730.95 : 1,005,650.24 = 406,432.76 : x
  2. Step 2: Convert to fraction form
    728,730.95/1,005,650.24 = 406,432.76/x
  3. Step 3: Cross multiply
    728,730.95x = 1,005,650.24 × 406,432.76
  4. Step 4: Simplify right side
    728,730.95x = 408,729,195,577.45
  5. Step 5: Solve for x
    x = 408,729,195,577.45/728,730.95
  6. Step 6: Final answer
    x = 560,878.06

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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.