Home / 260,783,706.70-391,175,560.05-256,752,628.30

Finding the Fourth Proportional to 260,783,706.70, 391,175,560.05 and 256,752,628.30

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Solution

The fourth proportional to 260,783,706.70, 391,175,560.05 and 256,752,628.30 is: 385,128,942.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,783,706.70 : 391,175,560.05 = 256,752,628.30 : x
  2. Step 2: Convert to fraction form
    260,783,706.70/391,175,560.05 = 256,752,628.30/x
  3. Step 3: Cross multiply
    260,783,706.70x = 391,175,560.05 × 256,752,628.30
  4. Step 4: Simplify right side
    260,783,706.70x = 100,435,353,169,561,984
  5. Step 5: Solve for x
    x = 100,435,353,169,561,984/260,783,706.70
  6. Step 6: Final answer
    x = 385,128,942.45

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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.