Home / 429,407.39-647,127.03-386,766.36

Finding the Fourth Proportional to 429,407.39, 647,127.03 and 386,766.36

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Solution

The fourth proportional to 429,407.39, 647,127.03 and 386,766.36 is: 582,865.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,407.39 : 647,127.03 = 386,766.36 : x
  2. Step 2: Convert to fraction form
    429,407.39/647,127.03 = 386,766.36/x
  3. Step 3: Cross multiply
    429,407.39x = 647,127.03 × 386,766.36
  4. Step 4: Simplify right side
    429,407.39x = 250,286,963,916.88
  5. Step 5: Solve for x
    x = 250,286,963,916.88/429,407.39
  6. Step 6: Final answer
    x = 582,865.99

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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.