Home / 1,278,201.40-1,917,302.10-647,033.20

Finding the Fourth Proportional to 1,278,201.40, 1,917,302.10 and 647,033.20

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Solution

The fourth proportional to 1,278,201.40, 1,917,302.10 and 647,033.20 is: 970,549.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,201.40 : 1,917,302.10 = 647,033.20 : x
  2. Step 2: Convert to fraction form
    1,278,201.40/1,917,302.10 = 647,033.20/x
  3. Step 3: Cross multiply
    1,278,201.40x = 1,917,302.10 × 647,033.20
  4. Step 4: Simplify right side
    1,278,201.40x = 1,240,558,113,129.72
  5. Step 5: Solve for x
    x = 1,240,558,113,129.72/1,278,201.40
  6. Step 6: Final answer
    x = 970,549.80

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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.