Home / 621,557.45-857,743.06-345,910.69

Finding the Fourth Proportional to 621,557.45, 857,743.06 and 345,910.69

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Solution

The fourth proportional to 621,557.45, 857,743.06 and 345,910.69 is: 477,353.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,557.45 : 857,743.06 = 345,910.69 : x
  2. Step 2: Convert to fraction form
    621,557.45/857,743.06 = 345,910.69/x
  3. Step 3: Cross multiply
    621,557.45x = 857,743.06 × 345,910.69
  4. Step 4: Simplify right side
    621,557.45x = 296,702,493,727.31
  5. Step 5: Solve for x
    x = 296,702,493,727.31/621,557.45
  6. Step 6: Final answer
    x = 477,353.29

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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.