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Finding the Fourth Proportional to 1,300,894.08, 1,949,917.68 and 669,845.76

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Solution

The fourth proportional to 1,300,894.08, 1,949,917.68 and 669,845.76 is: 1,004,035.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,300,894.08 : 1,949,917.68 = 669,845.76 : x
  2. Step 2: Convert to fraction form
    1,300,894.08/1,949,917.68 = 669,845.76/x
  3. Step 3: Cross multiply
    1,300,894.08x = 1,949,917.68 × 669,845.76
  4. Step 4: Simplify right side
    1,300,894.08x = 1,306,144,090,297.04
  5. Step 5: Solve for x
    x = 1,306,144,090,297.04/1,300,894.08
  6. Step 6: Final answer
    x = 1,004,035.69

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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.