Home / 1,419,746.20-2,128,568.90-670,917.40

Finding the Fourth Proportional to 1,419,746.20, 2,128,568.90 and 670,917.40

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Solution

The fourth proportional to 1,419,746.20, 2,128,568.90 and 670,917.40 is: 1,005,879.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,419,746.20 : 2,128,568.90 = 670,917.40 : x
  2. Step 2: Convert to fraction form
    1,419,746.20/2,128,568.90 = 670,917.40/x
  3. Step 3: Cross multiply
    1,419,746.20x = 2,128,568.90 × 670,917.40
  4. Step 4: Simplify right side
    1,419,746.20x = 1,428,093,912,108.86
  5. Step 5: Solve for x
    x = 1,428,093,912,108.86/1,419,746.20
  6. Step 6: Final answer
    x = 1,005,879.72

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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.