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Finding the Fourth Proportional to 812,617, 1,121,039.34 and 526,229.32

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Solution

The fourth proportional to 812,617, 1,121,039.34 and 526,229.32 is: 725,955.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,617 : 1,121,039.34 = 526,229.32 : x
  2. Step 2: Convert to fraction form
    812,617/1,121,039.34 = 526,229.32/x
  3. Step 3: Cross multiply
    812,617x = 1,121,039.34 × 526,229.32
  4. Step 4: Simplify right side
    812,617x = 589,923,769,581.45
  5. Step 5: Solve for x
    x = 589,923,769,581.45/812,617
  6. Step 6: Final answer
    x = 725,955.49

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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.