Home / 709,687.40-1,064,531.10-485,738.60

Finding the Fourth Proportional to 709,687.40, 1,064,531.10 and 485,738.60

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Solution

The fourth proportional to 709,687.40, 1,064,531.10 and 485,738.60 is: 728,607.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,687.40 : 1,064,531.10 = 485,738.60 : x
  2. Step 2: Convert to fraction form
    709,687.40/1,064,531.10 = 485,738.60/x
  3. Step 3: Cross multiply
    709,687.40x = 1,064,531.10 × 485,738.60
  4. Step 4: Simplify right side
    709,687.40x = 517,083,846,170.46
  5. Step 5: Solve for x
    x = 517,083,846,170.46/709,687.40
  6. Step 6: Final answer
    x = 728,607.90

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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.