Home / 1,217,728.40-1,680,440.04-673,863.84

Finding the Fourth Proportional to 1,217,728.40, 1,680,440.04 and 673,863.84

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Solution

The fourth proportional to 1,217,728.40, 1,680,440.04 and 673,863.84 is: 929,918.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,728.40 : 1,680,440.04 = 673,863.84 : x
  2. Step 2: Convert to fraction form
    1,217,728.40/1,680,440.04 = 673,863.84/x
  3. Step 3: Cross multiply
    1,217,728.40x = 1,680,440.04 × 673,863.84
  4. Step 4: Simplify right side
    1,217,728.40x = 1,132,387,778,244.15
  5. Step 5: Solve for x
    x = 1,132,387,778,244.15/1,217,728.40
  6. Step 6: Final answer
    x = 929,918.18

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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.