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Finding the Fourth Proportional to 627,788.40, 940,127.40 and 402,802.80

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Solution

The fourth proportional to 627,788.40, 940,127.40 and 402,802.80 is: 603,206.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,788.40 : 940,127.40 = 402,802.80 : x
  2. Step 2: Convert to fraction form
    627,788.40/940,127.40 = 402,802.80/x
  3. Step 3: Cross multiply
    627,788.40x = 940,127.40 × 402,802.80
  4. Step 4: Simplify right side
    627,788.40x = 378,685,949,076.72
  5. Step 5: Solve for x
    x = 378,685,949,076.72/627,788.40
  6. Step 6: Final answer
    x = 603,206.35

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1.5x scale

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.