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Finding the Fourth Proportional to 480,674.88, 721,014.75 and 125,689.68

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Solution

The fourth proportional to 480,674.88, 721,014.75 and 125,689.68 is: 188,535.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,674.88 : 721,014.75 = 125,689.68 : x
  2. Step 2: Convert to fraction form
    480,674.88/721,014.75 = 125,689.68/x
  3. Step 3: Cross multiply
    480,674.88x = 721,014.75 × 125,689.68
  4. Step 4: Simplify right side
    480,674.88x = 90,624,113,202.78
  5. Step 5: Solve for x
    x = 90,624,113,202.78/480,674.88
  6. Step 6: Final answer
    x = 188,535.16

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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.