Home / 831,837.22-1,147,988.51-469,128.74

Finding the Fourth Proportional to 831,837.22, 1,147,988.51 and 469,128.74

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Solution

The fourth proportional to 831,837.22, 1,147,988.51 and 469,128.74 is: 647,427.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,837.22 : 1,147,988.51 = 469,128.74 : x
  2. Step 2: Convert to fraction form
    831,837.22/1,147,988.51 = 469,128.74/x
  3. Step 3: Cross multiply
    831,837.22x = 1,147,988.51 × 469,128.74
  4. Step 4: Simplify right side
    831,837.22x = 538,554,396,904.42
  5. Step 5: Solve for x
    x = 538,554,396,904.42/831,837.22
  6. Step 6: Final answer
    x = 647,427.63

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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.