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Finding the Fourth Proportional to 528,292.80, 791,039.52 and 278,449.92

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Solution

The fourth proportional to 528,292.80, 791,039.52 and 278,449.92 is: 416,937.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,292.80 : 791,039.52 = 278,449.92 : x
  2. Step 2: Convert to fraction form
    528,292.80/791,039.52 = 278,449.92/x
  3. Step 3: Cross multiply
    528,292.80x = 791,039.52 × 278,449.92
  4. Step 4: Simplify right side
    528,292.80x = 220,264,891,060.84
  5. Step 5: Solve for x
    x = 220,264,891,060.84/528,292.80
  6. Step 6: Final answer
    x = 416,937.14

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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.