Home / 821,664.40-1,231,344.60-653,472.40

Finding the Fourth Proportional to 821,664.40, 1,231,344.60 and 653,472.40

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Solution

The fourth proportional to 821,664.40, 1,231,344.60 and 653,472.40 is: 979,292.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,664.40 : 1,231,344.60 = 653,472.40 : x
  2. Step 2: Convert to fraction form
    821,664.40/1,231,344.60 = 653,472.40/x
  3. Step 3: Cross multiply
    821,664.40x = 1,231,344.60 × 653,472.40
  4. Step 4: Simplify right side
    821,664.40x = 804,649,710,989.04
  5. Step 5: Solve for x
    x = 804,649,710,989.04/821,664.40
  6. Step 6: Final answer
    x = 979,292.41

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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.