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Finding the Fourth Proportional to 641,612.92, 885,446.70 and 369,659.44

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Solution

The fourth proportional to 641,612.92, 885,446.70 and 369,659.44 is: 510,142.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,612.92 : 885,446.70 = 369,659.44 : x
  2. Step 2: Convert to fraction form
    641,612.92/885,446.70 = 369,659.44/x
  3. Step 3: Cross multiply
    641,612.92x = 885,446.70 × 369,659.44
  4. Step 4: Simplify right side
    641,612.92x = 327,313,731,271.85
  5. Step 5: Solve for x
    x = 327,313,731,271.85/641,612.92
  6. Step 6: Final answer
    x = 510,142.05

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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.