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Finding the Fourth Proportional to 615,425, 848,616.98 and 400,165.88

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Solution

The fourth proportional to 615,425, 848,616.98 and 400,165.88 is: 551,793.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,425 : 848,616.98 = 400,165.88 : x
  2. Step 2: Convert to fraction form
    615,425/848,616.98 = 400,165.88/x
  3. Step 3: Cross multiply
    615,425x = 848,616.98 × 400,165.88
  4. Step 4: Simplify right side
    615,425x = 339,587,560,584.64
  5. Step 5: Solve for x
    x = 339,587,560,584.64/615,425
  6. Step 6: Final answer
    x = 551,793.57

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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.