Home / 728,621.96-1,005,496.35-406,332.41

Finding the Fourth Proportional to 728,621.96, 1,005,496.35 and 406,332.41

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Solution

The fourth proportional to 728,621.96, 1,005,496.35 and 406,332.41 is: 560,737.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,621.96 : 1,005,496.35 = 406,332.41 : x
  2. Step 2: Convert to fraction form
    728,621.96/1,005,496.35 = 406,332.41/x
  3. Step 3: Cross multiply
    728,621.96x = 1,005,496.35 × 406,332.41
  4. Step 4: Simplify right side
    728,621.96x = 408,565,755,141.70
  5. Step 5: Solve for x
    x = 408,565,755,141.70/728,621.96
  6. Step 6: Final answer
    x = 560,737.64

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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.