Home / 728,263.76-1,092,159.36-278,960.72

Finding the Fourth Proportional to 728,263.76, 1,092,159.36 and 278,960.72

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Solution

The fourth proportional to 728,263.76, 1,092,159.36 and 278,960.72 is: 418,350.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,263.76 : 1,092,159.36 = 278,960.72 : x
  2. Step 2: Convert to fraction form
    728,263.76/1,092,159.36 = 278,960.72/x
  3. Step 3: Cross multiply
    728,263.76x = 1,092,159.36 × 278,960.72
  4. Step 4: Simplify right side
    728,263.76x = 304,669,561,420.34
  5. Step 5: Solve for x
    x = 304,669,561,420.34/728,263.76
  6. Step 6: Final answer
    x = 418,350.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.