Home / 728,577.15-1,005,440.85-406,307.61

Finding the Fourth Proportional to 728,577.15, 1,005,440.85 and 406,307.61

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Solution

The fourth proportional to 728,577.15, 1,005,440.85 and 406,307.61 is: 560,706.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,577.15 : 1,005,440.85 = 406,307.61 : x
  2. Step 2: Convert to fraction form
    728,577.15/1,005,440.85 = 406,307.61/x
  3. Step 3: Cross multiply
    728,577.15x = 1,005,440.85 × 406,307.61
  4. Step 4: Simplify right side
    728,577.15x = 408,518,268,759.87
  5. Step 5: Solve for x
    x = 408,518,268,759.87/728,577.15
  6. Step 6: Final answer
    x = 560,706.95

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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.