Home / 687,024.81-948,207.66-381,199.59

Finding the Fourth Proportional to 687,024.81, 948,207.66 and 381,199.59

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Solution

The fourth proportional to 687,024.81, 948,207.66 and 381,199.59 is: 526,118.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,024.81 : 948,207.66 = 381,199.59 : x
  2. Step 2: Convert to fraction form
    687,024.81/948,207.66 = 381,199.59/x
  3. Step 3: Cross multiply
    687,024.81x = 948,207.66 × 381,199.59
  4. Step 4: Simplify right side
    687,024.81x = 361,456,371,226.86
  5. Step 5: Solve for x
    x = 361,456,371,226.86/687,024.81
  6. Step 6: Final answer
    x = 526,118.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.