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Finding the Fourth Proportional to 431,785.60, 646,641.60 and 348,841.60

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Solution

The fourth proportional to 431,785.60, 646,641.60 and 348,841.60 is: 522,424.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,785.60 : 646,641.60 = 348,841.60 : x
  2. Step 2: Convert to fraction form
    431,785.60/646,641.60 = 348,841.60/x
  3. Step 3: Cross multiply
    431,785.60x = 646,641.60 × 348,841.60
  4. Step 4: Simplify right side
    431,785.60x = 225,575,490,370.56
  5. Step 5: Solve for x
    x = 225,575,490,370.56/431,785.60
  6. Step 6: Final answer
    x = 522,424.76

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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.