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Finding the Fourth Proportional to 723,555, 998,505.90 and 401,314.44

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Solution

The fourth proportional to 723,555, 998,505.90 and 401,314.44 is: 553,813.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,555 : 998,505.90 = 401,314.44 : x
  2. Step 2: Convert to fraction form
    723,555/998,505.90 = 401,314.44/x
  3. Step 3: Cross multiply
    723,555x = 998,505.90 × 401,314.44
  4. Step 4: Simplify right side
    723,555x = 400,714,836,095.20
  5. Step 5: Solve for x
    x = 400,714,836,095.20/723,555
  6. Step 6: Final answer
    x = 553,813.93

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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.