Home / 874,401.39-1,311,649.11-275,409.45

Finding the Fourth Proportional to 874,401.39, 1,311,649.11 and 275,409.45

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Solution

The fourth proportional to 874,401.39, 1,311,649.11 and 275,409.45 is: 413,128.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,401.39 : 1,311,649.11 = 275,409.45 : x
  2. Step 2: Convert to fraction form
    874,401.39/1,311,649.11 = 275,409.45/x
  3. Step 3: Cross multiply
    874,401.39x = 1,311,649.11 × 275,409.45
  4. Step 4: Simplify right side
    874,401.39x = 361,240,559,978.09
  5. Step 5: Solve for x
    x = 361,240,559,978.09/874,401.39
  6. Step 6: Final answer
    x = 413,128.99

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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.