Home / 426,734.28-640,101.39-127,425.03

Finding the Fourth Proportional to 426,734.28, 640,101.39 and 127,425.03

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Solution

The fourth proportional to 426,734.28, 640,101.39 and 127,425.03 is: 191,137.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,734.28 : 640,101.39 = 127,425.03 : x
  2. Step 2: Convert to fraction form
    426,734.28/640,101.39 = 127,425.03/x
  3. Step 3: Cross multiply
    426,734.28x = 640,101.39 × 127,425.03
  4. Step 4: Simplify right side
    426,734.28x = 81,564,938,823.79
  5. Step 5: Solve for x
    x = 81,564,938,823.79/426,734.28
  6. Step 6: Final answer
    x = 191,137.54

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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.