Home / 260,783,590.70-391,175,386.05-256,752,512.30

Finding the Fourth Proportional to 260,783,590.70, 391,175,386.05 and 256,752,512.30

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Solution

The fourth proportional to 260,783,590.70, 391,175,386.05 and 256,752,512.30 is: 385,128,768.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,783,590.70 : 391,175,386.05 = 256,752,512.30 : x
  2. Step 2: Convert to fraction form
    260,783,590.70/391,175,386.05 = 256,752,512.30/x
  3. Step 3: Cross multiply
    260,783,590.70x = 391,175,386.05 × 256,752,512.30
  4. Step 4: Simplify right side
    260,783,590.70x = 100,435,263,118,259,888
  5. Step 5: Solve for x
    x = 100,435,263,118,259,888/260,783,590.70
  6. Step 6: Final answer
    x = 385,128,768.45

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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.