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Finding the Fourth Proportional to 641,343.46, 885,040.32 and 350,953.86

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Solution

The fourth proportional to 641,343.46, 885,040.32 and 350,953.86 is: 484,308.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,343.46 : 885,040.32 = 350,953.86 : x
  2. Step 2: Convert to fraction form
    641,343.46/885,040.32 = 350,953.86/x
  3. Step 3: Cross multiply
    641,343.46x = 885,040.32 × 350,953.86
  4. Step 4: Simplify right side
    641,343.46x = 310,608,316,559.64
  5. Step 5: Solve for x
    x = 310,608,316,559.64/641,343.46
  6. Step 6: Final answer
    x = 484,308.85

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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.