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Finding the Fourth Proportional to 663,660.84, 915,848.46 and 377,163.84

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Solution

The fourth proportional to 663,660.84, 915,848.46 and 377,163.84 is: 520,484.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,660.84 : 915,848.46 = 377,163.84 : x
  2. Step 2: Convert to fraction form
    663,660.84/915,848.46 = 377,163.84/x
  3. Step 3: Cross multiply
    663,660.84x = 915,848.46 × 377,163.84
  4. Step 4: Simplify right side
    663,660.84x = 345,424,922,031.69
  5. Step 5: Solve for x
    x = 345,424,922,031.69/663,660.84
  6. Step 6: Final answer
    x = 520,484.11

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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.