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Finding the Fourth Proportional to 641,761.35, 885,595.55 and 351,316.74

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Solution

The fourth proportional to 641,761.35, 885,595.55 and 351,316.74 is: 484,797.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,761.35 : 885,595.55 = 351,316.74 : x
  2. Step 2: Convert to fraction form
    641,761.35/885,595.55 = 351,316.74/x
  3. Step 3: Cross multiply
    641,761.35x = 885,595.55 × 351,316.74
  4. Step 4: Simplify right side
    641,761.35x = 311,124,539,827.92
  5. Step 5: Solve for x
    x = 311,124,539,827.92/641,761.35
  6. Step 6: Final answer
    x = 484,797.88

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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.