Home / 687,229.79-948,429.06-381,364.07

Finding the Fourth Proportional to 687,229.79, 948,429.06 and 381,364.07

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Solution

The fourth proportional to 687,229.79, 948,429.06 and 381,364.07 is: 526,311.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,229.79 : 948,429.06 = 381,364.07 : x
  2. Step 2: Convert to fraction form
    687,229.79/948,429.06 = 381,364.07/x
  3. Step 3: Cross multiply
    687,229.79x = 948,429.06 × 381,364.07
  4. Step 4: Simplify right side
    687,229.79x = 361,696,766,427.87
  5. Step 5: Solve for x
    x = 361,696,766,427.87/687,229.79
  6. Step 6: Final answer
    x = 526,311.25

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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.