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Finding the Fourth Proportional to 723,553.50, 998,503.83 and 401,312.94

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Solution

The fourth proportional to 723,553.50, 998,503.83 and 401,312.94 is: 553,811.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,553.50 : 998,503.83 = 401,312.94 : x
  2. Step 2: Convert to fraction form
    723,553.50/998,503.83 = 401,312.94/x
  3. Step 3: Cross multiply
    723,553.50x = 998,503.83 × 401,312.94
  4. Step 4: Simplify right side
    723,553.50x = 400,712,507,618.56
  5. Step 5: Solve for x
    x = 400,712,507,618.56/723,553.50
  6. Step 6: Final answer
    x = 553,811.86

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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.