Home / 871,256.80-1,306,885.20-731,288.80

Finding the Fourth Proportional to 871,256.80, 1,306,885.20 and 731,288.80

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Solution

The fourth proportional to 871,256.80, 1,306,885.20 and 731,288.80 is: 1,096,933.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,256.80 : 1,306,885.20 = 731,288.80 : x
  2. Step 2: Convert to fraction form
    871,256.80/1,306,885.20 = 731,288.80/x
  3. Step 3: Cross multiply
    871,256.80x = 1,306,885.20 × 731,288.80
  4. Step 4: Simplify right side
    871,256.80x = 955,710,509,645.76
  5. Step 5: Solve for x
    x = 955,710,509,645.76/871,256.80
  6. Step 6: Final answer
    x = 1,096,933.20

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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.