Home / 1,640,138.40-2,459,138.40-1,472,176.80

Finding the Fourth Proportional to 1,640,138.40, 2,459,138.40 and 1,472,176.80

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Solution

The fourth proportional to 1,640,138.40, 2,459,138.40 and 1,472,176.80 is: 2,207,305.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640,138.40 : 2,459,138.40 = 1,472,176.80 : x
  2. Step 2: Convert to fraction form
    1,640,138.40/2,459,138.40 = 1,472,176.80/x
  3. Step 3: Cross multiply
    1,640,138.40x = 2,459,138.40 × 1,472,176.80
  4. Step 4: Simplify right side
    1,640,138.40x = 3,620,286,500,469.12
  5. Step 5: Solve for x
    x = 3,620,286,500,469.12/1,640,138.40
  6. Step 6: Final answer
    x = 2,207,305.49

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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.