Home / 260,760,000.80-391,140,001.20-256,933,625.60

Finding the Fourth Proportional to 260,760,000.80, 391,140,001.20 and 256,933,625.60

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Solution

The fourth proportional to 260,760,000.80, 391,140,001.20 and 256,933,625.60 is: 385,400,438.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,760,000.80 : 391,140,001.20 = 256,933,625.60 : x
  2. Step 2: Convert to fraction form
    260,760,000.80/391,140,001.20 = 256,933,625.60/x
  3. Step 3: Cross multiply
    260,760,000.80x = 391,140,001.20 × 256,933,625.60
  4. Step 4: Simplify right side
    260,760,000.80x = 100,497,018,625,504,352
  5. Step 5: Solve for x
    x = 100,497,018,625,504,352/260,760,000.80
  6. Step 6: Final answer
    x = 385,400,438.40

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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.