Home / 728,784.70-1,005,720.27-406,494.55

Finding the Fourth Proportional to 728,784.70, 1,005,720.27 and 406,494.55

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Solution

The fourth proportional to 728,784.70, 1,005,720.27 and 406,494.55 is: 560,961.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,784.70 : 1,005,720.27 = 406,494.55 : x
  2. Step 2: Convert to fraction form
    728,784.70/1,005,720.27 = 406,494.55/x
  3. Step 3: Cross multiply
    728,784.70x = 1,005,720.27 × 406,494.55
  4. Step 4: Simplify right side
    728,784.70x = 408,819,803,550.93
  5. Step 5: Solve for x
    x = 408,819,803,550.93/728,784.70
  6. Step 6: Final answer
    x = 560,961.02

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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.