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Finding the Fourth Proportional to 629,350.40, 868,500.96 and 342,869.60

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Solution

The fourth proportional to 629,350.40, 868,500.96 and 342,869.60 is: 473,158.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,350.40 : 868,500.96 = 342,869.60 : x
  2. Step 2: Convert to fraction form
    629,350.40/868,500.96 = 342,869.60/x
  3. Step 3: Cross multiply
    629,350.40x = 868,500.96 × 342,869.60
  4. Step 4: Simplify right side
    629,350.40x = 297,782,576,754.82
  5. Step 5: Solve for x
    x = 297,782,576,754.82/629,350.40
  6. Step 6: Final answer
    x = 473,158.64

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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.