Home / 1,280,044.80-1,768,147.20-981,918.72

Finding the Fourth Proportional to 1,280,044.80, 1,768,147.20 and 981,918.72

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Solution

The fourth proportional to 1,280,044.80, 1,768,147.20 and 981,918.72 is: 1,356,340.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,044.80 : 1,768,147.20 = 981,918.72 : x
  2. Step 2: Convert to fraction form
    1,280,044.80/1,768,147.20 = 981,918.72/x
  3. Step 3: Cross multiply
    1,280,044.80x = 1,768,147.20 × 981,918.72
  4. Step 4: Simplify right side
    1,280,044.80x = 1,736,176,835,395.58
  5. Step 5: Solve for x
    x = 1,736,176,835,395.58/1,280,044.80
  6. Step 6: Final answer
    x = 1,356,340.68

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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.