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Finding the Fourth Proportional to 629,764.32, 869,099.04 and 343,300.80

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Solution

The fourth proportional to 629,764.32, 869,099.04 and 343,300.80 is: 473,768.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,764.32 : 869,099.04 = 343,300.80 : x
  2. Step 2: Convert to fraction form
    629,764.32/869,099.04 = 343,300.80/x
  3. Step 3: Cross multiply
    629,764.32x = 869,099.04 × 343,300.80
  4. Step 4: Simplify right side
    629,764.32x = 298,362,395,711.23
  5. Step 5: Solve for x
    x = 298,362,395,711.23/629,764.32
  6. Step 6: Final answer
    x = 473,768.34

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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.