Home / 508,841.21-766,919.29-438,611.46

Finding the Fourth Proportional to 508,841.21, 766,919.29 and 438,611.46

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Solution

The fourth proportional to 508,841.21, 766,919.29 and 438,611.46 is: 661,069.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,841.21 : 766,919.29 = 438,611.46 : x
  2. Step 2: Convert to fraction form
    508,841.21/766,919.29 = 438,611.46/x
  3. Step 3: Cross multiply
    508,841.21x = 766,919.29 × 438,611.46
  4. Step 4: Simplify right side
    508,841.21x = 336,379,589,489.06
  5. Step 5: Solve for x
    x = 336,379,589,489.06/508,841.21
  6. Step 6: Final answer
    x = 661,069.86

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.