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Finding the Fourth Proportional to 485,785.60, 730,233.60 and 346,508.80

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Solution

The fourth proportional to 485,785.60, 730,233.60 and 346,508.80 is: 520,872.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,785.60 : 730,233.60 = 346,508.80 : x
  2. Step 2: Convert to fraction form
    485,785.60/730,233.60 = 346,508.80/x
  3. Step 3: Cross multiply
    485,785.60x = 730,233.60 × 346,508.80
  4. Step 4: Simplify right side
    485,785.60x = 253,032,368,455.68
  5. Step 5: Solve for x
    x = 253,032,368,455.68/485,785.60
  6. Step 6: Final answer
    x = 520,872.52

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1.5x scale

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.