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Finding the Fourth Proportional to 663,307.64, 915,367.58 and 376,843.44

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Solution

The fourth proportional to 663,307.64, 915,367.58 and 376,843.44 is: 520,045.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,307.64 : 915,367.58 = 376,843.44 : x
  2. Step 2: Convert to fraction form
    663,307.64/915,367.58 = 376,843.44/x
  3. Step 3: Cross multiply
    663,307.64x = 915,367.58 × 376,843.44
  4. Step 4: Simplify right side
    663,307.64x = 344,950,267,711.68
  5. Step 5: Solve for x
    x = 344,950,267,711.68/663,307.64
  6. Step 6: Final answer
    x = 520,045.67

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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.