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Finding the Fourth Proportional to 723,556.50, 998,507.97 and 401,315.94

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Solution

The fourth proportional to 723,556.50, 998,507.97 and 401,315.94 is: 553,816.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,556.50 : 998,507.97 = 401,315.94 : x
  2. Step 2: Convert to fraction form
    723,556.50/998,507.97 = 401,315.94/x
  3. Step 3: Cross multiply
    723,556.50x = 998,507.97 × 401,315.94
  4. Step 4: Simplify right side
    723,556.50x = 400,717,164,578.04
  5. Step 5: Solve for x
    x = 400,717,164,578.04/723,556.50
  6. Step 6: Final answer
    x = 553,816.00

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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.