Home / 728,734.32-1,005,658.74-406,465.29

Finding the Fourth Proportional to 728,734.32, 1,005,658.74 and 406,465.29

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Solution

The fourth proportional to 728,734.32, 1,005,658.74 and 406,465.29 is: 560,925.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,734.32 : 1,005,658.74 = 406,465.29 : x
  2. Step 2: Convert to fraction form
    728,734.32/1,005,658.74 = 406,465.29/x
  3. Step 3: Cross multiply
    728,734.32x = 1,005,658.74 × 406,465.29
  4. Step 4: Simplify right side
    728,734.32x = 408,765,371,395.14
  5. Step 5: Solve for x
    x = 408,765,371,395.14/728,734.32
  6. Step 6: Final answer
    x = 560,925.10

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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.