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Finding the Fourth Proportional to 526,436.87, 789,710.67 and 171,478.58

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Solution

The fourth proportional to 526,436.87, 789,710.67 and 171,478.58 is: 257,235.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,436.87 : 789,710.67 = 171,478.58 : x
  2. Step 2: Convert to fraction form
    526,436.87/789,710.67 = 171,478.58/x
  3. Step 3: Cross multiply
    526,436.87x = 789,710.67 × 171,478.58
  4. Step 4: Simplify right side
    526,436.87x = 135,418,460,353.90
  5. Step 5: Solve for x
    x = 135,418,460,353.90/526,436.87
  6. Step 6: Final answer
    x = 257,235.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.