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Finding the Fourth Proportional to 664,440.66, 916,863.57 and 377,903.70

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Solution

The fourth proportional to 664,440.66, 916,863.57 and 377,903.70 is: 521,470.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,440.66 : 916,863.57 = 377,903.70 : x
  2. Step 2: Convert to fraction form
    664,440.66/916,863.57 = 377,903.70/x
  3. Step 3: Cross multiply
    664,440.66x = 916,863.57 × 377,903.70
  4. Step 4: Simplify right side
    664,440.66x = 346,486,135,498.21
  5. Step 5: Solve for x
    x = 346,486,135,498.21/664,440.66
  6. Step 6: Final answer
    x = 521,470.40

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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.