Home / 1,258,537.50-1,737,438.39-978,513.78

Finding the Fourth Proportional to 1,258,537.50, 1,737,438.39 and 978,513.78

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Solution

The fourth proportional to 1,258,537.50, 1,737,438.39 and 978,513.78 is: 1,350,859.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258,537.50 : 1,737,438.39 = 978,513.78 : x
  2. Step 2: Convert to fraction form
    1,258,537.50/1,737,438.39 = 978,513.78/x
  3. Step 3: Cross multiply
    1,258,537.50x = 1,737,438.39 × 978,513.78
  4. Step 4: Simplify right side
    1,258,537.50x = 1,700,107,406,516.01
  5. Step 5: Solve for x
    x = 1,700,107,406,516.01/1,258,537.50
  6. Step 6: Final answer
    x = 1,350,859.55

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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.