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Finding the Fourth Proportional to 627,810.40, 940,160.40 and 402,824.80

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Solution

The fourth proportional to 627,810.40, 940,160.40 and 402,824.80 is: 603,239.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,810.40 : 940,160.40 = 402,824.80 : x
  2. Step 2: Convert to fraction form
    627,810.40/940,160.40 = 402,824.80/x
  3. Step 3: Cross multiply
    627,810.40x = 940,160.40 × 402,824.80
  4. Step 4: Simplify right side
    627,810.40x = 378,719,925,097.92
  5. Step 5: Solve for x
    x = 378,719,925,097.92/627,810.40
  6. Step 6: Final answer
    x = 603,239.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.