Home / 1,217,722.40-1,680,431.76-673,857.84

Finding the Fourth Proportional to 1,217,722.40, 1,680,431.76 and 673,857.84

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Solution

The fourth proportional to 1,217,722.40, 1,680,431.76 and 673,857.84 is: 929,909.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,722.40 : 1,680,431.76 = 673,857.84 : x
  2. Step 2: Convert to fraction form
    1,217,722.40/1,680,431.76 = 673,857.84/x
  3. Step 3: Cross multiply
    1,217,722.40x = 1,680,431.76 × 673,857.84
  4. Step 4: Simplify right side
    1,217,722.40x = 1,132,372,116,061.00
  5. Step 5: Solve for x
    x = 1,132,372,116,061.00/1,217,722.40
  6. Step 6: Final answer
    x = 929,909.90

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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.