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Finding the Fourth Proportional to 526,710.60, 790,065.90 and 421,734.60

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Solution

The fourth proportional to 526,710.60, 790,065.90 and 421,734.60 is: 632,601.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,710.60 : 790,065.90 = 421,734.60 : x
  2. Step 2: Convert to fraction form
    526,710.60/790,065.90 = 421,734.60/x
  3. Step 3: Cross multiply
    526,710.60x = 790,065.90 × 421,734.60
  4. Step 4: Simplify right side
    526,710.60x = 333,198,126,310.14
  5. Step 5: Solve for x
    x = 333,198,126,310.14/526,710.60
  6. Step 6: Final answer
    x = 632,601.90

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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.