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Finding the Fourth Proportional to 663,557.67, 915,709.05 and 361,751.67

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Solution

The fourth proportional to 663,557.67, 915,709.05 and 361,751.67 is: 499,217.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,557.67 : 915,709.05 = 361,751.67 : x
  2. Step 2: Convert to fraction form
    663,557.67/915,709.05 = 361,751.67/x
  3. Step 3: Cross multiply
    663,557.67x = 915,709.05 × 361,751.67
  4. Step 4: Simplify right side
    663,557.67x = 331,259,278,071.61
  5. Step 5: Solve for x
    x = 331,259,278,071.61/663,557.67
  6. Step 6: Final answer
    x = 499,217.01

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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.