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Finding the Fourth Proportional to 472,861.58, 652,646.10 and 289,131.56

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Solution

The fourth proportional to 472,861.58, 652,646.10 and 289,131.56 is: 399,060.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,861.58 : 652,646.10 = 289,131.56 : x
  2. Step 2: Convert to fraction form
    472,861.58/652,646.10 = 289,131.56/x
  3. Step 3: Cross multiply
    472,861.58x = 652,646.10 × 289,131.56
  4. Step 4: Simplify right side
    472,861.58x = 188,700,581,757.69
  5. Step 5: Solve for x
    x = 188,700,581,757.69/472,861.58
  6. Step 6: Final answer
    x = 399,060.93

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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.