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Finding the Fourth Proportional to 526,305, 726,318.18 and 287,841

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Solution

The fourth proportional to 526,305, 726,318.18 and 287,841 is: 397,230.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,305 : 726,318.18 = 287,841 : x
  2. Step 2: Convert to fraction form
    526,305/726,318.18 = 287,841/x
  3. Step 3: Cross multiply
    526,305x = 726,318.18 × 287,841
  4. Step 4: Simplify right side
    526,305x = 209,064,151,249.38
  5. Step 5: Solve for x
    x = 209,064,151,249.38/526,305
  6. Step 6: Final answer
    x = 397,230.03

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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.