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Finding the Fourth Proportional to 480,666.12, 721,040.32 and 125,679.56

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Solution

The fourth proportional to 480,666.12, 721,040.32 and 125,679.56 is: 188,530.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,666.12 : 721,040.32 = 125,679.56 : x
  2. Step 2: Convert to fraction form
    480,666.12/721,040.32 = 125,679.56/x
  3. Step 3: Cross multiply
    480,666.12x = 721,040.32 × 125,679.56
  4. Step 4: Simplify right side
    480,666.12x = 90,620,030,159.86
  5. Step 5: Solve for x
    x = 90,620,030,159.86/480,666.12
  6. Step 6: Final answer
    x = 188,530.10

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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.