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Finding the Fourth Proportional to 611,660.64, 844,091.70 and 343,388.64

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Solution

The fourth proportional to 611,660.64, 844,091.70 and 343,388.64 is: 473,876.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,660.64 : 844,091.70 = 343,388.64 : x
  2. Step 2: Convert to fraction form
    611,660.64/844,091.70 = 343,388.64/x
  3. Step 3: Cross multiply
    611,660.64x = 844,091.70 × 343,388.64
  4. Step 4: Simplify right side
    611,660.64x = 289,851,500,898.29
  5. Step 5: Solve for x
    x = 289,851,500,898.29/611,660.64
  6. Step 6: Final answer
    x = 473,876.33

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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.