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Finding the Fourth Proportional to 640,673.96, 883,983.17 and 382,500.63

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Solution

The fourth proportional to 640,673.96, 883,983.17 and 382,500.63 is: 527,763.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,673.96 : 883,983.17 = 382,500.63 : x
  2. Step 2: Convert to fraction form
    640,673.96/883,983.17 = 382,500.63/x
  3. Step 3: Cross multiply
    640,673.96x = 883,983.17 × 382,500.63
  4. Step 4: Simplify right side
    640,673.96x = 338,124,120,390.65
  5. Step 5: Solve for x
    x = 338,124,120,390.65/640,673.96
  6. Step 6: Final answer
    x = 527,763.17

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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.