Home / 871,013.40-1,306,908.90-310,450.20

Finding the Fourth Proportional to 871,013.40, 1,306,908.90 and 310,450.20

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Solution

The fourth proportional to 871,013.40, 1,306,908.90 and 310,450.20 is: 465,813.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,013.40 : 1,306,908.90 = 310,450.20 : x
  2. Step 2: Convert to fraction form
    871,013.40/1,306,908.90 = 310,450.20/x
  3. Step 3: Cross multiply
    871,013.40x = 1,306,908.90 × 310,450.20
  4. Step 4: Simplify right side
    871,013.40x = 405,730,129,386.78
  5. Step 5: Solve for x
    x = 405,730,129,386.78/871,013.40
  6. Step 6: Final answer
    x = 465,813.88

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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.