Home / 728,731.95-1,005,651.62-406,433.76

Finding the Fourth Proportional to 728,731.95, 1,005,651.62 and 406,433.76

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Solution

The fourth proportional to 728,731.95, 1,005,651.62 and 406,433.76 is: 560,879.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,731.95 : 1,005,651.62 = 406,433.76 : x
  2. Step 2: Convert to fraction form
    728,731.95/1,005,651.62 = 406,433.76/x
  3. Step 3: Cross multiply
    728,731.95x = 1,005,651.62 × 406,433.76
  4. Step 4: Simplify right side
    728,731.95x = 408,730,769,166.69
  5. Step 5: Solve for x
    x = 408,730,769,166.69/728,731.95
  6. Step 6: Final answer
    x = 560,879.44

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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.