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Finding the Fourth Proportional to 526,512.60, 789,768.90 and 349,219.80

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Solution

The fourth proportional to 526,512.60, 789,768.90 and 349,219.80 is: 523,829.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,512.60 : 789,768.90 = 349,219.80 : x
  2. Step 2: Convert to fraction form
    526,512.60/789,768.90 = 349,219.80/x
  3. Step 3: Cross multiply
    526,512.60x = 789,768.90 × 349,219.80
  4. Step 4: Simplify right side
    526,512.60x = 275,802,937,304.22
  5. Step 5: Solve for x
    x = 275,802,937,304.22/526,512.60
  6. Step 6: Final answer
    x = 523,829.70

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Similar ratio
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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.