Home / 728,769.52-1,005,703.71-406,500.49

Finding the Fourth Proportional to 728,769.52, 1,005,703.71 and 406,500.49

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Solution

The fourth proportional to 728,769.52, 1,005,703.71 and 406,500.49 is: 560,971.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,769.52 : 1,005,703.71 = 406,500.49 : x
  2. Step 2: Convert to fraction form
    728,769.52/1,005,703.71 = 406,500.49/x
  3. Step 3: Cross multiply
    728,769.52x = 1,005,703.71 × 406,500.49
  4. Step 4: Simplify right side
    728,769.52x = 408,819,045,881.30
  5. Step 5: Solve for x
    x = 408,819,045,881.30/728,769.52
  6. Step 6: Final answer
    x = 560,971.66

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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.