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Finding the Fourth Proportional to 691,808, 954,696.32 and 373,856

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Solution

The fourth proportional to 691,808, 954,696.32 and 373,856 is: 515,921.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,808 : 954,696.32 = 373,856 : x
  2. Step 2: Convert to fraction form
    691,808/954,696.32 = 373,856/x
  3. Step 3: Cross multiply
    691,808x = 954,696.32 × 373,856
  4. Step 4: Simplify right side
    691,808x = 356,918,947,409.92
  5. Step 5: Solve for x
    x = 356,918,947,409.92/691,808
  6. Step 6: Final answer
    x = 515,921.97

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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.