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Finding the Fourth Proportional to 916,492, 1,374,850.32 and 285,305.44

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Solution

The fourth proportional to 916,492, 1,374,850.32 and 285,305.44 is: 427,993.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,492 : 1,374,850.32 = 285,305.44 : x
  2. Step 2: Convert to fraction form
    916,492/1,374,850.32 = 285,305.44/x
  3. Step 3: Cross multiply
    916,492x = 1,374,850.32 × 285,305.44
  4. Step 4: Simplify right side
    916,492x = 392,252,275,481.74
  5. Step 5: Solve for x
    x = 392,252,275,481.74/916,492
  6. Step 6: Final answer
    x = 427,993.13

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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.