Home / 857,141.40-1,288,676.70-801,640.20

Finding the Fourth Proportional to 857,141.40, 1,288,676.70 and 801,640.20

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Solution

The fourth proportional to 857,141.40, 1,288,676.70 and 801,640.20 is: 1,205,232.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,141.40 : 1,288,676.70 = 801,640.20 : x
  2. Step 2: Convert to fraction form
    857,141.40/1,288,676.70 = 801,640.20/x
  3. Step 3: Cross multiply
    857,141.40x = 1,288,676.70 × 801,640.20
  4. Step 4: Simplify right side
    857,141.40x = 1,033,055,047,523.34
  5. Step 5: Solve for x
    x = 1,033,055,047,523.34/857,141.40
  6. Step 6: Final answer
    x = 1,205,232.94

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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.