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Finding the Fourth Proportional to 621,695.64, 857,914.98 and 349,768.92

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Solution

The fourth proportional to 621,695.64, 857,914.98 and 349,768.92 is: 482,667.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,695.64 : 857,914.98 = 349,768.92 : x
  2. Step 2: Convert to fraction form
    621,695.64/857,914.98 = 349,768.92/x
  3. Step 3: Cross multiply
    621,695.64x = 857,914.98 × 349,768.92
  4. Step 4: Simplify right side
    621,695.64x = 300,071,996,006.42
  5. Step 5: Solve for x
    x = 300,071,996,006.42/621,695.64
  6. Step 6: Final answer
    x = 482,667.04

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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.