Home / 1,278,013.44-1,917,265.92-489,984

Finding the Fourth Proportional to 1,278,013.44, 1,917,265.92 and 489,984

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Solution

The fourth proportional to 1,278,013.44, 1,917,265.92 and 489,984 is: 735,070.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,013.44 : 1,917,265.92 = 489,984 : x
  2. Step 2: Convert to fraction form
    1,278,013.44/1,917,265.92 = 489,984/x
  3. Step 3: Cross multiply
    1,278,013.44x = 1,917,265.92 × 489,984
  4. Step 4: Simplify right side
    1,278,013.44x = 939,429,624,545.28
  5. Step 5: Solve for x
    x = 939,429,624,545.28/1,278,013.44
  6. Step 6: Final answer
    x = 735,070.22

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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.