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Finding the Fourth Proportional to 615,165.76, 848,398.62 and 400,227.40

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Solution

The fourth proportional to 615,165.76, 848,398.62 and 400,227.40 is: 551,968.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,165.76 : 848,398.62 = 400,227.40 : x
  2. Step 2: Convert to fraction form
    615,165.76/848,398.62 = 400,227.40/x
  3. Step 3: Cross multiply
    615,165.76x = 848,398.62 × 400,227.40
  4. Step 4: Simplify right side
    615,165.76x = 339,552,373,846.19
  5. Step 5: Solve for x
    x = 339,552,373,846.19/615,165.76
  6. Step 6: Final answer
    x = 551,968.91

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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.