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Finding the Fourth Proportional to 526,546.80, 789,820.20 and 260,826.30

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Solution

The fourth proportional to 526,546.80, 789,820.20 and 260,826.30 is: 391,239.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,546.80 : 789,820.20 = 260,826.30 : x
  2. Step 2: Convert to fraction form
    526,546.80/789,820.20 = 260,826.30/x
  3. Step 3: Cross multiply
    526,546.80x = 789,820.20 × 260,826.30
  4. Step 4: Simplify right side
    526,546.80x = 206,005,880,431.26
  5. Step 5: Solve for x
    x = 206,005,880,431.26/526,546.80
  6. Step 6: Final answer
    x = 391,239.45

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Double scale
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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.