Home / 723,870.11-1,085,777.87-218,417.61

Finding the Fourth Proportional to 723,870.11, 1,085,777.87 and 218,417.61

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Solution

The fourth proportional to 723,870.11, 1,085,777.87 and 218,417.61 is: 327,618.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,870.11 : 1,085,777.87 = 218,417.61 : x
  2. Step 2: Convert to fraction form
    723,870.11/1,085,777.87 = 218,417.61/x
  3. Step 3: Cross multiply
    723,870.11x = 1,085,777.87 × 218,417.61
  4. Step 4: Simplify right side
    723,870.11x = 237,153,007,356.29
  5. Step 5: Solve for x
    x = 237,153,007,356.29/723,870.11
  6. Step 6: Final answer
    x = 327,618.18

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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.