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Finding the Fourth Proportional to 871,446.80, 1,217,537.20 and 871,446.80

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Solution

The fourth proportional to 871,446.80, 1,217,537.20 and 871,446.80 is: 1,217,537.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,446.80 : 1,217,537.20 = 871,446.80 : x
  2. Step 2: Convert to fraction form
    871,446.80/1,217,537.20 = 871,446.80/x
  3. Step 3: Cross multiply
    871,446.80x = 1,217,537.20 × 871,446.80
  4. Step 4: Simplify right side
    871,446.80x = 1,061,018,896,820.96
  5. Step 5: Solve for x
    x = 1,061,018,896,820.96/871,446.80
  6. Step 6: Final answer
    x = 1,217,537.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.