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Finding the Fourth Proportional to 691,445, 954,194.10 and 373,493

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Solution

The fourth proportional to 691,445, 954,194.10 and 373,493 is: 515,420.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,445 : 954,194.10 = 373,493 : x
  2. Step 2: Convert to fraction form
    691,445/954,194.10 = 373,493/x
  3. Step 3: Cross multiply
    691,445x = 954,194.10 × 373,493
  4. Step 4: Simplify right side
    691,445x = 356,384,816,991.30
  5. Step 5: Solve for x
    x = 356,384,816,991.30/691,445
  6. Step 6: Final answer
    x = 515,420.34

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1.5x scale

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.