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Finding the Fourth Proportional to 723,067.36, 997,892.70 and 400,878.52

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Solution

The fourth proportional to 723,067.36, 997,892.70 and 400,878.52 is: 553,245.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,067.36 : 997,892.70 = 400,878.52 : x
  2. Step 2: Convert to fraction form
    723,067.36/997,892.70 = 400,878.52/x
  3. Step 3: Cross multiply
    723,067.36x = 997,892.70 × 400,878.52
  4. Step 4: Simplify right side
    723,067.36x = 400,033,748,694.80
  5. Step 5: Solve for x
    x = 400,033,748,694.80/723,067.36
  6. Step 6: Final answer
    x = 553,245.48

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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.