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Finding the Fourth Proportional to 525,115.70, 787,673.55 and 259,003.70

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Solution

The fourth proportional to 525,115.70, 787,673.55 and 259,003.70 is: 388,505.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,115.70 : 787,673.55 = 259,003.70 : x
  2. Step 2: Convert to fraction form
    525,115.70/787,673.55 = 259,003.70/x
  3. Step 3: Cross multiply
    525,115.70x = 787,673.55 × 259,003.70
  4. Step 4: Simplify right side
    525,115.70x = 204,010,363,842.14
  5. Step 5: Solve for x
    x = 204,010,363,842.14/525,115.70
  6. Step 6: Final answer
    x = 388,505.55

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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.