Home / 836,388.28-1,255,213.36-387,424.15

Finding the Fourth Proportional to 836,388.28, 1,255,213.36 and 387,424.15

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Solution

The fourth proportional to 836,388.28, 1,255,213.36 and 387,424.15 is: 581,428.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    836,388.28 : 1,255,213.36 = 387,424.15 : x
  2. Step 2: Convert to fraction form
    836,388.28/1,255,213.36 = 387,424.15/x
  3. Step 3: Cross multiply
    836,388.28x = 1,255,213.36 × 387,424.15
  4. Step 4: Simplify right side
    836,388.28x = 486,299,966,412.89
  5. Step 5: Solve for x
    x = 486,299,966,412.89/836,388.28
  6. Step 6: Final answer
    x = 581,428.48

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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.