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Finding the Fourth Proportional to 641,760.44, 885,722.08 and 369,776.24

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Solution

The fourth proportional to 641,760.44, 885,722.08 and 369,776.24 is: 510,344.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,760.44 : 885,722.08 = 369,776.24 : x
  2. Step 2: Convert to fraction form
    641,760.44/885,722.08 = 369,776.24/x
  3. Step 3: Cross multiply
    641,760.44x = 885,722.08 × 369,776.24
  4. Step 4: Simplify right side
    641,760.44x = 327,518,980,427.38
  5. Step 5: Solve for x
    x = 327,518,980,427.38/641,760.44
  6. Step 6: Final answer
    x = 510,344.61

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Double scale
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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.