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Finding the Fourth Proportional to 664,491.74, 918,198.11 and 473,172.98

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Solution

The fourth proportional to 664,491.74, 918,198.11 and 473,172.98 is: 653,832.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,491.74 : 918,198.11 = 473,172.98 : x
  2. Step 2: Convert to fraction form
    664,491.74/918,198.11 = 473,172.98/x
  3. Step 3: Cross multiply
    664,491.74x = 918,198.11 × 473,172.98
  4. Step 4: Simplify right side
    664,491.74x = 434,466,535,939.07
  5. Step 5: Solve for x
    x = 434,466,535,939.07/664,491.74
  6. Step 6: Final answer
    x = 653,832.86

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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.