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Finding the Fourth Proportional to 526,545.20, 789,817.80 and 260,346.80

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Solution

The fourth proportional to 526,545.20, 789,817.80 and 260,346.80 is: 390,520.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,545.20 : 789,817.80 = 260,346.80 : x
  2. Step 2: Convert to fraction form
    526,545.20/789,817.80 = 260,346.80/x
  3. Step 3: Cross multiply
    526,545.20x = 789,817.80 × 260,346.80
  4. Step 4: Simplify right side
    526,545.20x = 205,626,536,813.04
  5. Step 5: Solve for x
    x = 205,626,536,813.04/526,545.20
  6. Step 6: Final answer
    x = 390,520.20

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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.