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Finding the Fourth Proportional to 627,730.40, 940,040.40 and 402,744.80

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Solution

The fourth proportional to 627,730.40, 940,040.40 and 402,744.80 is: 603,119.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,730.40 : 940,040.40 = 402,744.80 : x
  2. Step 2: Convert to fraction form
    627,730.40/940,040.40 = 402,744.80/x
  3. Step 3: Cross multiply
    627,730.40x = 940,040.40 × 402,744.80
  4. Step 4: Simplify right side
    627,730.40x = 378,596,382,889.92
  5. Step 5: Solve for x
    x = 378,596,382,889.92/627,730.40
  6. Step 6: Final answer
    x = 603,119.40

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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.