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Finding the Fourth Proportional to 526,559.20, 789,838.80 and 521,310.40

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Solution

The fourth proportional to 526,559.20, 789,838.80 and 521,310.40 is: 781,965.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,559.20 : 789,838.80 = 521,310.40 : x
  2. Step 2: Convert to fraction form
    526,559.20/789,838.80 = 521,310.40/x
  3. Step 3: Cross multiply
    526,559.20x = 789,838.80 × 521,310.40
  4. Step 4: Simplify right side
    526,559.20x = 411,751,180,763.52
  5. Step 5: Solve for x
    x = 411,751,180,763.52/526,559.20
  6. Step 6: Final answer
    x = 781,965.60

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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.