Home / 526,621.60-789,932.40-421,645.60

Finding the Fourth Proportional to 526,621.60, 789,932.40 and 421,645.60

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Solution

The fourth proportional to 526,621.60, 789,932.40 and 421,645.60 is: 632,468.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,621.60 : 789,932.40 = 421,645.60 : x
  2. Step 2: Convert to fraction form
    526,621.60/789,932.40 = 421,645.60/x
  3. Step 3: Cross multiply
    526,621.60x = 789,932.40 × 421,645.60
  4. Step 4: Simplify right side
    526,621.60x = 333,071,520,757.44
  5. Step 5: Solve for x
    x = 333,071,520,757.44/526,621.60
  6. Step 6: Final answer
    x = 632,468.40

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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.