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Finding the Fourth Proportional to 629,428.36, 868,600.20 and 342,950.80

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Solution

The fourth proportional to 629,428.36, 868,600.20 and 342,950.80 is: 473,266.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,428.36 : 868,600.20 = 342,950.80 : x
  2. Step 2: Convert to fraction form
    629,428.36/868,600.20 = 342,950.80/x
  3. Step 3: Cross multiply
    629,428.36x = 868,600.20 × 342,950.80
  4. Step 4: Simplify right side
    629,428.36x = 297,887,133,470.16
  5. Step 5: Solve for x
    x = 297,887,133,470.16/629,428.36
  6. Step 6: Final answer
    x = 473,266.14

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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.