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Finding the Fourth Proportional to 1,792,797.76, 2,688,972.76 and 726,815.62

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Solution

The fourth proportional to 1,792,797.76, 2,688,972.76 and 726,815.62 is: 1,090,132.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,792,797.76 : 2,688,972.76 = 726,815.62 : x
  2. Step 2: Convert to fraction form
    1,792,797.76/2,688,972.76 = 726,815.62/x
  3. Step 3: Cross multiply
    1,792,797.76x = 2,688,972.76 × 726,815.62
  4. Step 4: Simplify right side
    1,792,797.76x = 1,954,387,403,722.51
  5. Step 5: Solve for x
    x = 1,954,387,403,722.51/1,792,797.76
  6. Step 6: Final answer
    x = 1,090,132.67

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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.