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Finding the Fourth Proportional to 723,557, 998,508.66 and 401,316.44

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Solution

The fourth proportional to 723,557, 998,508.66 and 401,316.44 is: 553,816.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,557 : 998,508.66 = 401,316.44 : x
  2. Step 2: Convert to fraction form
    723,557/998,508.66 = 401,316.44/x
  3. Step 3: Cross multiply
    723,557x = 998,508.66 × 401,316.44
  4. Step 4: Simplify right side
    723,557x = 400,717,940,740.37
  5. Step 5: Solve for x
    x = 400,717,940,740.37/723,557
  6. Step 6: Final answer
    x = 553,816.69

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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.