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Finding the Fourth Proportional to 526,436.81, 789,710.57 and 171,478.51

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Solution

The fourth proportional to 526,436.81, 789,710.57 and 171,478.51 is: 257,235.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,436.81 : 789,710.57 = 171,478.51 : x
  2. Step 2: Convert to fraction form
    526,436.81/789,710.57 = 171,478.51/x
  3. Step 3: Cross multiply
    526,436.81x = 789,710.57 × 171,478.51
  4. Step 4: Simplify right side
    526,436.81x = 135,418,390,329.27
  5. Step 5: Solve for x
    x = 135,418,390,329.27/526,436.81
  6. Step 6: Final answer
    x = 257,235.80

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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.