Home / 1,387,288.20-2,079,377.10-788,536.20

Finding the Fourth Proportional to 1,387,288.20, 2,079,377.10 and 788,536.20

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Solution

The fourth proportional to 1,387,288.20, 2,079,377.10 and 788,536.20 is: 1,181,920.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,288.20 : 2,079,377.10 = 788,536.20 : x
  2. Step 2: Convert to fraction form
    1,387,288.20/2,079,377.10 = 788,536.20/x
  3. Step 3: Cross multiply
    1,387,288.20x = 2,079,377.10 × 788,536.20
  4. Step 4: Simplify right side
    1,387,288.20x = 1,639,664,116,801.02
  5. Step 5: Solve for x
    x = 1,639,664,116,801.02/1,387,288.20
  6. Step 6: Final answer
    x = 1,181,920.32

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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.