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Finding the Fourth Proportional to 643,802.04, 888,241.14 and 371,834.01

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Solution

The fourth proportional to 643,802.04, 888,241.14 and 371,834.01 is: 513,012.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,802.04 : 888,241.14 = 371,834.01 : x
  2. Step 2: Convert to fraction form
    643,802.04/888,241.14 = 371,834.01/x
  3. Step 3: Cross multiply
    643,802.04x = 888,241.14 × 371,834.01
  4. Step 4: Simplify right side
    643,802.04x = 330,278,264,933.17
  5. Step 5: Solve for x
    x = 330,278,264,933.17/643,802.04
  6. Step 6: Final answer
    x = 513,012.14

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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.