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Finding the Fourth Proportional to 526,390.53, 726,490.67 and 322,452.78

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Solution

The fourth proportional to 526,390.53, 726,490.67 and 322,452.78 is: 445,028.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,390.53 : 726,490.67 = 322,452.78 : x
  2. Step 2: Convert to fraction form
    526,390.53/726,490.67 = 322,452.78/x
  3. Step 3: Cross multiply
    526,390.53x = 726,490.67 × 322,452.78
  4. Step 4: Simplify right side
    526,390.53x = 234,258,934,573.30
  5. Step 5: Solve for x
    x = 234,258,934,573.30/526,390.53
  6. Step 6: Final answer
    x = 445,028.78

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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.