Home / 427,076.75-640,748.39-127,569.14

Finding the Fourth Proportional to 427,076.75, 640,748.39 and 127,569.14

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Solution

The fourth proportional to 427,076.75, 640,748.39 and 127,569.14 is: 191,393.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,076.75 : 640,748.39 = 127,569.14 : x
  2. Step 2: Convert to fraction form
    427,076.75/640,748.39 = 127,569.14/x
  3. Step 3: Cross multiply
    427,076.75x = 640,748.39 × 127,569.14
  4. Step 4: Simplify right side
    427,076.75x = 81,739,722,032.71
  5. Step 5: Solve for x
    x = 81,739,722,032.71/427,076.75
  6. Step 6: Final answer
    x = 191,393.52

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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.