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Finding the Fourth Proportional to 629,379.38, 868,543.62 and 342,899.46

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Solution

The fourth proportional to 629,379.38, 868,543.62 and 342,899.46 is: 473,201.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,379.38 : 868,543.62 = 342,899.46 : x
  2. Step 2: Convert to fraction form
    629,379.38/868,543.62 = 342,899.46/x
  3. Step 3: Cross multiply
    629,379.38x = 868,543.62 × 342,899.46
  4. Step 4: Simplify right side
    629,379.38x = 297,823,138,284.45
  5. Step 5: Solve for x
    x = 297,823,138,284.45/629,379.38
  6. Step 6: Final answer
    x = 473,201.30

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1.5x scale

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.