Home / 1,425,079.28-1,966,570.68-813,220.88

Finding the Fourth Proportional to 1,425,079.28, 1,966,570.68 and 813,220.88

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Solution

The fourth proportional to 1,425,079.28, 1,966,570.68 and 813,220.88 is: 1,122,222.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425,079.28 : 1,966,570.68 = 813,220.88 : x
  2. Step 2: Convert to fraction form
    1,425,079.28/1,966,570.68 = 813,220.88/x
  3. Step 3: Cross multiply
    1,425,079.28x = 1,966,570.68 × 813,220.88
  4. Step 4: Simplify right side
    1,425,079.28x = 1,599,256,338,971.80
  5. Step 5: Solve for x
    x = 1,599,256,338,971.80/1,425,079.28
  6. Step 6: Final answer
    x = 1,122,222.72

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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.