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Finding the Fourth Proportional to 629,436.60, 868,626.72 and 342,955.80

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Solution

The fourth proportional to 629,436.60, 868,626.72 and 342,955.80 is: 473,281.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,436.60 : 868,626.72 = 342,955.80 : x
  2. Step 2: Convert to fraction form
    629,436.60/868,626.72 = 342,955.80/x
  3. Step 3: Cross multiply
    629,436.60x = 868,626.72 × 342,955.80
  4. Step 4: Simplify right side
    629,436.60x = 297,900,571,658.98
  5. Step 5: Solve for x
    x = 297,900,571,658.98/629,436.60
  6. Step 6: Final answer
    x = 473,281.30

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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.