Home / 1,391,946.80-2,087,920.20-949,578.80

Finding the Fourth Proportional to 1,391,946.80, 2,087,920.20 and 949,578.80

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Solution

The fourth proportional to 1,391,946.80, 2,087,920.20 and 949,578.80 is: 1,424,368.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,946.80 : 2,087,920.20 = 949,578.80 : x
  2. Step 2: Convert to fraction form
    1,391,946.80/2,087,920.20 = 949,578.80/x
  3. Step 3: Cross multiply
    1,391,946.80x = 2,087,920.20 × 949,578.80
  4. Step 4: Simplify right side
    1,391,946.80x = 1,982,644,758,011.76
  5. Step 5: Solve for x
    x = 1,982,644,758,011.76/1,391,946.80
  6. Step 6: Final answer
    x = 1,424,368.20

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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.