Home / 728,740.96-1,005,664.04-406,442.76

Finding the Fourth Proportional to 728,740.96, 1,005,664.04 and 406,442.76

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Solution

The fourth proportional to 728,740.96, 1,005,664.04 and 406,442.76 is: 560,891.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,740.96 : 1,005,664.04 = 406,442.76 : x
  2. Step 2: Convert to fraction form
    728,740.96/1,005,664.04 = 406,442.76/x
  3. Step 3: Cross multiply
    728,740.96x = 1,005,664.04 × 406,442.76
  4. Step 4: Simplify right side
    728,740.96x = 408,744,868,050.35
  5. Step 5: Solve for x
    x = 408,744,868,050.35/728,740.96
  6. Step 6: Final answer
    x = 560,891.85

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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.