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Finding the Fourth Proportional to 480,666.54, 721,623.12 and 321,759.12

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Solution

The fourth proportional to 480,666.54, 721,623.12 and 321,759.12 is: 483,055.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,666.54 : 721,623.12 = 321,759.12 : x
  2. Step 2: Convert to fraction form
    480,666.54/721,623.12 = 321,759.12/x
  3. Step 3: Cross multiply
    480,666.54x = 721,623.12 × 321,759.12
  4. Step 4: Simplify right side
    480,666.54x = 232,188,820,062.85
  5. Step 5: Solve for x
    x = 232,188,820,062.85/480,666.54
  6. Step 6: Final answer
    x = 483,055.92

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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.