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Finding the Fourth Proportional to 641,142.25, 884,689.65 and 365,535.66

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Solution

The fourth proportional to 641,142.25, 884,689.65 and 365,535.66 is: 504,389.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,142.25 : 884,689.65 = 365,535.66 : x
  2. Step 2: Convert to fraction form
    641,142.25/884,689.65 = 365,535.66/x
  3. Step 3: Cross multiply
    641,142.25x = 884,689.65 × 365,535.66
  4. Step 4: Simplify right side
    641,142.25x = 323,385,615,107.92
  5. Step 5: Solve for x
    x = 323,385,615,107.92/641,142.25
  6. Step 6: Final answer
    x = 504,389.81

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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.