Home / 643,819.47-888,513.32-371,898.81

Finding the Fourth Proportional to 643,819.47, 888,513.32 and 371,898.81

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Solution

The fourth proportional to 643,819.47, 888,513.32 and 371,898.81 is: 513,244.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,819.47 : 888,513.32 = 371,898.81 : x
  2. Step 2: Convert to fraction form
    643,819.47/888,513.32 = 371,898.81/x
  3. Step 3: Cross multiply
    643,819.47x = 888,513.32 × 371,898.81
  4. Step 4: Simplify right side
    643,819.47x = 330,437,044,517.66
  5. Step 5: Solve for x
    x = 330,437,044,517.66/643,819.47
  6. Step 6: Final answer
    x = 513,244.88

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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.