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Finding the Fourth Proportional to 664,018.07, 916,252.49 and 377,506.49

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Solution

The fourth proportional to 664,018.07, 916,252.49 and 377,506.49 is: 520,906.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,018.07 : 916,252.49 = 377,506.49 : x
  2. Step 2: Convert to fraction form
    664,018.07/916,252.49 = 377,506.49/x
  3. Step 3: Cross multiply
    664,018.07x = 916,252.49 × 377,506.49
  4. Step 4: Simplify right side
    664,018.07x = 345,891,257,816.16
  5. Step 5: Solve for x
    x = 345,891,257,816.16/664,018.07
  6. Step 6: Final answer
    x = 520,906.40

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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.