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Finding the Fourth Proportional to 621,660.57, 857,842.52 and 349,674.32

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Solution

The fourth proportional to 621,660.57, 857,842.52 and 349,674.32 is: 482,522.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,660.57 : 857,842.52 = 349,674.32 : x
  2. Step 2: Convert to fraction form
    621,660.57/857,842.52 = 349,674.32/x
  3. Step 3: Cross multiply
    621,660.57x = 857,842.52 × 349,674.32
  4. Step 4: Simplify right side
    621,660.57x = 299,965,493,810.50
  5. Step 5: Solve for x
    x = 299,965,493,810.50/621,660.57
  6. Step 6: Final answer
    x = 482,522.95

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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.