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Finding the Fourth Proportional to 638,850.80, 958,276.20 and 526,876.40

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Solution

The fourth proportional to 638,850.80, 958,276.20 and 526,876.40 is: 790,314.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,850.80 : 958,276.20 = 526,876.40 : x
  2. Step 2: Convert to fraction form
    638,850.80/958,276.20 = 526,876.40/x
  3. Step 3: Cross multiply
    638,850.80x = 958,276.20 × 526,876.40
  4. Step 4: Simplify right side
    638,850.80x = 504,893,114,461.68
  5. Step 5: Solve for x
    x = 504,893,114,461.68/638,850.80
  6. Step 6: Final answer
    x = 790,314.60

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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.