Home / 1,287,282.57-1,930,963.65-647,612.34

Finding the Fourth Proportional to 1,287,282.57, 1,930,963.65 and 647,612.34

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Solution

The fourth proportional to 1,287,282.57, 1,930,963.65 and 647,612.34 is: 971,438.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,282.57 : 1,930,963.65 = 647,612.34 : x
  2. Step 2: Convert to fraction form
    1,287,282.57/1,930,963.65 = 647,612.34/x
  3. Step 3: Cross multiply
    1,287,282.57x = 1,930,963.65 × 647,612.34
  4. Step 4: Simplify right side
    1,287,282.57x = 1,250,515,887,831.44
  5. Step 5: Solve for x
    x = 1,250,515,887,831.44/1,287,282.57
  6. Step 6: Final answer
    x = 971,438.53

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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.