Home / 781,625.20-1,172,207.40-308,153.20

Finding the Fourth Proportional to 781,625.20, 1,172,207.40 and 308,153.20

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Solution

The fourth proportional to 781,625.20, 1,172,207.40 and 308,153.20 is: 462,138.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,625.20 : 1,172,207.40 = 308,153.20 : x
  2. Step 2: Convert to fraction form
    781,625.20/1,172,207.40 = 308,153.20/x
  3. Step 3: Cross multiply
    781,625.20x = 1,172,207.40 × 308,153.20
  4. Step 4: Simplify right side
    781,625.20x = 361,219,461,373.68
  5. Step 5: Solve for x
    x = 361,219,461,373.68/781,625.20
  6. Step 6: Final answer
    x = 462,138.97

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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.