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Finding the Fourth Proportional to 723,607.62, 998,611.85 and 401,298.51

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Solution

The fourth proportional to 723,607.62, 998,611.85 and 401,298.51 is: 553,810.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,607.62 : 998,611.85 = 401,298.51 : x
  2. Step 2: Convert to fraction form
    723,607.62/998,611.85 = 401,298.51/x
  3. Step 3: Cross multiply
    723,607.62x = 998,611.85 × 401,298.51
  4. Step 4: Simplify right side
    723,607.62x = 400,741,447,473.34
  5. Step 5: Solve for x
    x = 400,741,447,473.34/723,607.62
  6. Step 6: Final answer
    x = 553,810.43

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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.