Home / 643,802.40-888,557.26-371,821.41

Finding the Fourth Proportional to 643,802.40, 888,557.26 and 371,821.41

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Solution

The fourth proportional to 643,802.40, 888,557.26 and 371,821.41 is: 513,177.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,802.40 : 888,557.26 = 371,821.41 : x
  2. Step 2: Convert to fraction form
    643,802.40/888,557.26 = 371,821.41/x
  3. Step 3: Cross multiply
    643,802.40x = 888,557.26 × 371,821.41
  4. Step 4: Simplify right side
    643,802.40x = 330,384,613,278.94
  5. Step 5: Solve for x
    x = 330,384,613,278.94/643,802.40
  6. Step 6: Final answer
    x = 513,177.05

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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.