Home / 1,211,315.90-1,671,690.56-667,451.61

Finding the Fourth Proportional to 1,211,315.90, 1,671,690.56 and 667,451.61

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Solution

The fourth proportional to 1,211,315.90, 1,671,690.56 and 667,451.61 is: 921,124.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,315.90 : 1,671,690.56 = 667,451.61 : x
  2. Step 2: Convert to fraction form
    1,211,315.90/1,671,690.56 = 667,451.61/x
  3. Step 3: Cross multiply
    1,211,315.90x = 1,671,690.56 × 667,451.61
  4. Step 4: Simplify right side
    1,211,315.90x = 1,115,772,552,356.54
  5. Step 5: Solve for x
    x = 1,115,772,552,356.54/1,211,315.90
  6. Step 6: Final answer
    x = 921,124.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.