Home / 1,440,878.22-1,988,418.12-787,517.40

Finding the Fourth Proportional to 1,440,878.22, 1,988,418.12 and 787,517.40

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Solution

The fourth proportional to 1,440,878.22, 1,988,418.12 and 787,517.40 is: 1,086,777.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440,878.22 : 1,988,418.12 = 787,517.40 : x
  2. Step 2: Convert to fraction form
    1,440,878.22/1,988,418.12 = 787,517.40/x
  3. Step 3: Cross multiply
    1,440,878.22x = 1,988,418.12 × 787,517.40
  4. Step 4: Simplify right side
    1,440,878.22x = 1,565,913,867,975.29
  5. Step 5: Solve for x
    x = 1,565,913,867,975.29/1,440,878.22
  6. Step 6: Final answer
    x = 1,086,777.39

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1.5x scale

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.