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Finding the Fourth Proportional to 629,797.40, 869,114.78 and 343,317.40

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Solution

The fourth proportional to 629,797.40, 869,114.78 and 343,317.40 is: 473,774.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,797.40 : 869,114.78 = 343,317.40 : x
  2. Step 2: Convert to fraction form
    629,797.40/869,114.78 = 343,317.40/x
  3. Step 3: Cross multiply
    629,797.40x = 869,114.78 × 343,317.40
  4. Step 4: Simplify right side
    629,797.40x = 298,382,226,571.17
  5. Step 5: Solve for x
    x = 298,382,226,571.17/629,797.40
  6. Step 6: Final answer
    x = 473,774.94

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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.