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Finding the Fourth Proportional to 641,495.76, 885,250.08 and 351,105.84

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Solution

The fourth proportional to 641,495.76, 885,250.08 and 351,105.84 is: 484,518.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,495.76 : 885,250.08 = 351,105.84 : x
  2. Step 2: Convert to fraction form
    641,495.76/885,250.08 = 351,105.84/x
  3. Step 3: Cross multiply
    641,495.76x = 885,250.08 × 351,105.84
  4. Step 4: Simplify right side
    641,495.76x = 310,816,472,948.47
  5. Step 5: Solve for x
    x = 310,816,472,948.47/641,495.76
  6. Step 6: Final answer
    x = 484,518.36

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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.