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Finding the Fourth Proportional to 645,246.60, 967,999.10 and 361,340.90

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Solution

The fourth proportional to 645,246.60, 967,999.10 and 361,340.90 is: 542,083.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,246.60 : 967,999.10 = 361,340.90 : x
  2. Step 2: Convert to fraction form
    645,246.60/967,999.10 = 361,340.90/x
  3. Step 3: Cross multiply
    645,246.60x = 967,999.10 × 361,340.90
  4. Step 4: Simplify right side
    645,246.60x = 349,777,659,346.49
  5. Step 5: Solve for x
    x = 349,777,659,346.49/645,246.60
  6. Step 6: Final answer
    x = 542,083.69

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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.