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Finding the Fourth Proportional to 723,581.76, 998,604.16 and 401,395.66

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Solution

The fourth proportional to 723,581.76, 998,604.16 and 401,395.66 is: 553,960.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,581.76 : 998,604.16 = 401,395.66 : x
  2. Step 2: Convert to fraction form
    723,581.76/998,604.16 = 401,395.66/x
  3. Step 3: Cross multiply
    723,581.76x = 998,604.16 × 401,395.66
  4. Step 4: Simplify right side
    723,581.76x = 400,835,375,881.95
  5. Step 5: Solve for x
    x = 400,835,375,881.95/723,581.76
  6. Step 6: Final answer
    x = 553,960.03

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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.