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Finding the Fourth Proportional to 480,708.80, 721,063.20 and 404,601.20

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Solution

The fourth proportional to 480,708.80, 721,063.20 and 404,601.20 is: 606,901.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,708.80 : 721,063.20 = 404,601.20 : x
  2. Step 2: Convert to fraction form
    480,708.80/721,063.20 = 404,601.20/x
  3. Step 3: Cross multiply
    480,708.80x = 721,063.20 × 404,601.20
  4. Step 4: Simplify right side
    480,708.80x = 291,743,035,995.84
  5. Step 5: Solve for x
    x = 291,743,035,995.84/480,708.80
  6. Step 6: Final answer
    x = 606,901.80

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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.