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Finding the Fourth Proportional to 664,371, 916,881.26 and 377,983.35

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Solution

The fourth proportional to 664,371, 916,881.26 and 377,983.35 is: 521,645.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,371 : 916,881.26 = 377,983.35 : x
  2. Step 2: Convert to fraction form
    664,371/916,881.26 = 377,983.35/x
  3. Step 3: Cross multiply
    664,371x = 916,881.26 × 377,983.35
  4. Step 4: Simplify right side
    664,371x = 346,565,848,317.10
  5. Step 5: Solve for x
    x = 346,565,848,317.10/664,371
  6. Step 6: Final answer
    x = 521,645.06

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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.