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Finding the Fourth Proportional to 1,229,800, 1,697,124 and 693,256

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Solution

The fourth proportional to 1,229,800, 1,697,124 and 693,256 is: 956,693.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,229,800 : 1,697,124 = 693,256 : x
  2. Step 2: Convert to fraction form
    1,229,800/1,697,124 = 693,256/x
  3. Step 3: Cross multiply
    1,229,800x = 1,697,124 × 693,256
  4. Step 4: Simplify right side
    1,229,800x = 1,176,541,395,744
  5. Step 5: Solve for x
    x = 1,176,541,395,744/1,229,800
  6. Step 6: Final answer
    x = 956,693.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.