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Finding the Fourth Proportional to 663,636.73, 915,896.44 and 377,199.87

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Solution

The fourth proportional to 663,636.73, 915,896.44 and 377,199.87 is: 520,580.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,636.73 : 915,896.44 = 377,199.87 : x
  2. Step 2: Convert to fraction form
    663,636.73/915,896.44 = 377,199.87/x
  3. Step 3: Cross multiply
    663,636.73x = 915,896.44 × 377,199.87
  4. Step 4: Simplify right side
    663,636.73x = 345,476,018,101.46
  5. Step 5: Solve for x
    x = 345,476,018,101.46/663,636.73
  6. Step 6: Final answer
    x = 520,580.01

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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.