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Finding the Fourth Proportional to 425,256.14, 638,106.60 and 400,750.86

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Solution

The fourth proportional to 425,256.14, 638,106.60 and 400,750.86 is: 601,335.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,256.14 : 638,106.60 = 400,750.86 : x
  2. Step 2: Convert to fraction form
    425,256.14/638,106.60 = 400,750.86/x
  3. Step 3: Cross multiply
    425,256.14x = 638,106.60 × 400,750.86
  4. Step 4: Simplify right side
    425,256.14x = 255,721,768,721.68
  5. Step 5: Solve for x
    x = 255,721,768,721.68/425,256.14
  6. Step 6: Final answer
    x = 601,335.86

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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.