Home / 1,386,919.40-2,080,379.10-907,917.80

Finding the Fourth Proportional to 1,386,919.40, 2,080,379.10 and 907,917.80

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Solution

The fourth proportional to 1,386,919.40, 2,080,379.10 and 907,917.80 is: 1,361,876.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,919.40 : 2,080,379.10 = 907,917.80 : x
  2. Step 2: Convert to fraction form
    1,386,919.40/2,080,379.10 = 907,917.80/x
  3. Step 3: Cross multiply
    1,386,919.40x = 2,080,379.10 × 907,917.80
  4. Step 4: Simplify right side
    1,386,919.40x = 1,888,813,215,637.98
  5. Step 5: Solve for x
    x = 1,888,813,215,637.98/1,386,919.40
  6. Step 6: Final answer
    x = 1,361,876.70

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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.