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Finding the Fourth Proportional to 641,625.68, 885,536.76 and 369,640.64

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Solution

The fourth proportional to 641,625.68, 885,536.76 and 369,640.64 is: 510,157.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,625.68 : 885,536.76 = 369,640.64 : x
  2. Step 2: Convert to fraction form
    641,625.68/885,536.76 = 369,640.64/x
  3. Step 3: Cross multiply
    641,625.68x = 885,536.76 × 369,640.64
  4. Step 4: Simplify right side
    641,625.68x = 327,330,374,709.93
  5. Step 5: Solve for x
    x = 327,330,374,709.93/641,625.68
  6. Step 6: Final answer
    x = 510,157.85

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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.