Home / 817,660.80-1,226,491.20-218,714.40

Finding the Fourth Proportional to 817,660.80, 1,226,491.20 and 218,714.40

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Solution

The fourth proportional to 817,660.80, 1,226,491.20 and 218,714.40 is: 328,071.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,660.80 : 1,226,491.20 = 218,714.40 : x
  2. Step 2: Convert to fraction form
    817,660.80/1,226,491.20 = 218,714.40/x
  3. Step 3: Cross multiply
    817,660.80x = 1,226,491.20 × 218,714.40
  4. Step 4: Simplify right side
    817,660.80x = 268,251,286,913.28
  5. Step 5: Solve for x
    x = 268,251,286,913.28/817,660.80
  6. Step 6: Final answer
    x = 328,071.60

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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.