Home / 781,637.20-1,172,225.40-308,165.20

Finding the Fourth Proportional to 781,637.20, 1,172,225.40 and 308,165.20

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Solution

The fourth proportional to 781,637.20, 1,172,225.40 and 308,165.20 is: 462,156.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,637.20 : 1,172,225.40 = 308,165.20 : x
  2. Step 2: Convert to fraction form
    781,637.20/1,172,225.40 = 308,165.20/x
  3. Step 3: Cross multiply
    781,637.20x = 1,172,225.40 × 308,165.20
  4. Step 4: Simplify right side
    781,637.20x = 361,239,074,836.08
  5. Step 5: Solve for x
    x = 361,239,074,836.08/781,637.20
  6. Step 6: Final answer
    x = 462,156.96

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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.