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Finding the Fourth Proportional to 484,623.36, 667,146.24 and 399,605.76

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Solution

The fourth proportional to 484,623.36, 667,146.24 and 399,605.76 is: 550,108.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,623.36 : 667,146.24 = 399,605.76 : x
  2. Step 2: Convert to fraction form
    484,623.36/667,146.24 = 399,605.76/x
  3. Step 3: Cross multiply
    484,623.36x = 667,146.24 × 399,605.76
  4. Step 4: Simplify right side
    484,623.36x = 266,595,480,266.34
  5. Step 5: Solve for x
    x = 266,595,480,266.34/484,623.36
  6. Step 6: Final answer
    x = 550,108.60

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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.