Home / 643,066.47-887,367.80-371,221.94

Finding the Fourth Proportional to 643,066.47, 887,367.80 and 371,221.94

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Solution

The fourth proportional to 643,066.47, 887,367.80 and 371,221.94 is: 512,249.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,066.47 : 887,367.80 = 371,221.94 : x
  2. Step 2: Convert to fraction form
    643,066.47/887,367.80 = 371,221.94/x
  3. Step 3: Cross multiply
    643,066.47x = 887,367.80 × 371,221.94
  4. Step 4: Simplify right side
    643,066.47x = 329,410,389,916.58
  5. Step 5: Solve for x
    x = 329,410,389,916.58/643,066.47
  6. Step 6: Final answer
    x = 512,249.36

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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.