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Finding the Fourth Proportional to 640,483.34, 883,840.46 and 382,402.31

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Solution

The fourth proportional to 640,483.34, 883,840.46 and 382,402.31 is: 527,699.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,483.34 : 883,840.46 = 382,402.31 : x
  2. Step 2: Convert to fraction form
    640,483.34/883,840.46 = 382,402.31/x
  3. Step 3: Cross multiply
    640,483.34x = 883,840.46 × 382,402.31
  4. Step 4: Simplify right side
    640,483.34x = 337,982,629,156.26
  5. Step 5: Solve for x
    x = 337,982,629,156.26/640,483.34
  6. Step 6: Final answer
    x = 527,699.33

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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.