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Finding the Fourth Proportional to 664,036.84, 916,371.30 and 362,247.40

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Solution

The fourth proportional to 664,036.84, 916,371.30 and 362,247.40 is: 499,901.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,036.84 : 916,371.30 = 362,247.40 : x
  2. Step 2: Convert to fraction form
    664,036.84/916,371.30 = 362,247.40/x
  3. Step 3: Cross multiply
    664,036.84x = 916,371.30 × 362,247.40
  4. Step 4: Simplify right side
    664,036.84x = 331,953,120,859.62
  5. Step 5: Solve for x
    x = 331,953,120,859.62/664,036.84
  6. Step 6: Final answer
    x = 499,901.66

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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.