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Finding the Fourth Proportional to 723,853.89, 998,919.54 and 401,563.98

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Solution

The fourth proportional to 723,853.89, 998,919.54 and 401,563.98 is: 554,158.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,853.89 : 998,919.54 = 401,563.98 : x
  2. Step 2: Convert to fraction form
    723,853.89/998,919.54 = 401,563.98/x
  3. Step 3: Cross multiply
    723,853.89x = 998,919.54 × 401,563.98
  4. Step 4: Simplify right side
    723,853.89x = 401,130,106,182.17
  5. Step 5: Solve for x
    x = 401,130,106,182.17/723,853.89
  6. Step 6: Final answer
    x = 554,158.94

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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.