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Finding the Fourth Proportional to 663,307.86, 915,367.94 and 376,843.67

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Solution

The fourth proportional to 663,307.86, 915,367.94 and 376,843.67 is: 520,046.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,307.86 : 915,367.94 = 376,843.67 : x
  2. Step 2: Convert to fraction form
    663,307.86/915,367.94 = 376,843.67/x
  3. Step 3: Cross multiply
    663,307.86x = 915,367.94 × 376,843.67
  4. Step 4: Simplify right side
    663,307.86x = 344,950,607,448.88
  5. Step 5: Solve for x
    x = 344,950,607,448.88/663,307.86
  6. Step 6: Final answer
    x = 520,046.01

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1.5x scale

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.