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Finding the Fourth Proportional to 526,860.60, 787,958.10 and 442,879.80

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Solution

The fourth proportional to 526,860.60, 787,958.10 and 442,879.80 is: 662,358.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,860.60 : 787,958.10 = 442,879.80 : x
  2. Step 2: Convert to fraction form
    526,860.60/787,958.10 = 442,879.80/x
  3. Step 3: Cross multiply
    526,860.60x = 787,958.10 × 442,879.80
  4. Step 4: Simplify right side
    526,860.60x = 348,970,725,736.38
  5. Step 5: Solve for x
    x = 348,970,725,736.38/526,860.60
  6. Step 6: Final answer
    x = 662,358.74

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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.