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Finding the Fourth Proportional to 880,991, 1,215,664.44 and 518,335.10

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Solution

The fourth proportional to 880,991, 1,215,664.44 and 518,335.10 is: 715,241.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,991 : 1,215,664.44 = 518,335.10 : x
  2. Step 2: Convert to fraction form
    880,991/1,215,664.44 = 518,335.10/x
  3. Step 3: Cross multiply
    880,991x = 1,215,664.44 × 518,335.10
  4. Step 4: Simplify right side
    880,991x = 630,121,549,073.84
  5. Step 5: Solve for x
    x = 630,121,549,073.84/880,991
  6. Step 6: Final answer
    x = 715,241.76

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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.