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Finding the Fourth Proportional to 663,301.86, 915,359.66 and 376,837.67

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Solution

The fourth proportional to 663,301.86, 915,359.66 and 376,837.67 is: 520,037.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,301.86 : 915,359.66 = 376,837.67 : x
  2. Step 2: Convert to fraction form
    663,301.86/915,359.66 = 376,837.67/x
  3. Step 3: Cross multiply
    663,301.86x = 915,359.66 × 376,837.67
  4. Step 4: Simplify right side
    663,301.86x = 344,941,995,025.41
  5. Step 5: Solve for x
    x = 344,941,995,025.41/663,301.86
  6. Step 6: Final answer
    x = 520,037.73

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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.