Home / 1,228,009.28-1,694,705.12-684,144.80

Finding the Fourth Proportional to 1,228,009.28, 1,694,705.12 and 684,144.80

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Solution

The fourth proportional to 1,228,009.28, 1,694,705.12 and 684,144.80 is: 944,148.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,228,009.28 : 1,694,705.12 = 684,144.80 : x
  2. Step 2: Convert to fraction form
    1,228,009.28/1,694,705.12 = 684,144.80/x
  3. Step 3: Cross multiply
    1,228,009.28x = 1,694,705.12 × 684,144.80
  4. Step 4: Simplify right side
    1,228,009.28x = 1,159,423,695,381.38
  5. Step 5: Solve for x
    x = 1,159,423,695,381.38/1,228,009.28
  6. Step 6: Final answer
    x = 944,148.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.