Home / 1,386,036.60-2,079,054.90-639,540.60

Finding the Fourth Proportional to 1,386,036.60, 2,079,054.90 and 639,540.60

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Solution

The fourth proportional to 1,386,036.60, 2,079,054.90 and 639,540.60 is: 959,310.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,036.60 : 2,079,054.90 = 639,540.60 : x
  2. Step 2: Convert to fraction form
    1,386,036.60/2,079,054.90 = 639,540.60/x
  3. Step 3: Cross multiply
    1,386,036.60x = 2,079,054.90 × 639,540.60
  4. Step 4: Simplify right side
    1,386,036.60x = 1,329,640,018,178.94
  5. Step 5: Solve for x
    x = 1,329,640,018,178.94/1,386,036.60
  6. Step 6: Final answer
    x = 959,310.90

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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.