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Finding the Fourth Proportional to 687,295.74, 948,422.54 and 381,352.73

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Solution

The fourth proportional to 687,295.74, 948,422.54 and 381,352.73 is: 526,241.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,295.74 : 948,422.54 = 381,352.73 : x
  2. Step 2: Convert to fraction form
    687,295.74/948,422.54 = 381,352.73/x
  3. Step 3: Cross multiply
    687,295.74x = 948,422.54 × 381,352.73
  4. Step 4: Simplify right side
    687,295.74x = 361,683,521,033.80
  5. Step 5: Solve for x
    x = 361,683,521,033.80/687,295.74
  6. Step 6: Final answer
    x = 526,241.47

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1.5x scale

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.