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Finding the Fourth Proportional to 526,859.60, 787,956.60 and 442,878.80

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Solution

The fourth proportional to 526,859.60, 787,956.60 and 442,878.80 is: 662,357.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,859.60 : 787,956.60 = 442,878.80 : x
  2. Step 2: Convert to fraction form
    526,859.60/787,956.60 = 442,878.80/x
  3. Step 3: Cross multiply
    526,859.60x = 787,956.60 × 442,878.80
  4. Step 4: Simplify right side
    526,859.60x = 348,969,273,460.08
  5. Step 5: Solve for x
    x = 348,969,273,460.08/526,859.60
  6. Step 6: Final answer
    x = 662,357.25

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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.