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Finding the Fourth Proportional to 615,008.28, 848,422.08 and 400,069.92

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Solution

The fourth proportional to 615,008.28, 848,422.08 and 400,069.92 is: 551,908.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,008.28 : 848,422.08 = 400,069.92 : x
  2. Step 2: Convert to fraction form
    615,008.28/848,422.08 = 400,069.92/x
  3. Step 3: Cross multiply
    615,008.28x = 848,422.08 × 400,069.92
  4. Step 4: Simplify right side
    615,008.28x = 339,428,153,671.83
  5. Step 5: Solve for x
    x = 339,428,153,671.83/615,008.28
  6. Step 6: Final answer
    x = 551,908.27

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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.