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Finding the Fourth Proportional to 662,140.80, 993,211.20 and 262,876.80

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Solution

The fourth proportional to 662,140.80, 993,211.20 and 262,876.80 is: 394,315.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,140.80 : 993,211.20 = 262,876.80 : x
  2. Step 2: Convert to fraction form
    662,140.80/993,211.20 = 262,876.80/x
  3. Step 3: Cross multiply
    662,140.80x = 993,211.20 × 262,876.80
  4. Step 4: Simplify right side
    662,140.80x = 261,092,181,980.16
  5. Step 5: Solve for x
    x = 261,092,181,980.16/662,140.80
  6. Step 6: Final answer
    x = 394,315.20

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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.