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Finding the Fourth Proportional to 640,347.46, 883,644.66 and 353,849.06

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Solution

The fourth proportional to 640,347.46, 883,644.66 and 353,849.06 is: 488,292.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,347.46 : 883,644.66 = 353,849.06 : x
  2. Step 2: Convert to fraction form
    640,347.46/883,644.66 = 353,849.06/x
  3. Step 3: Cross multiply
    640,347.46x = 883,644.66 × 353,849.06
  4. Step 4: Simplify right side
    640,347.46x = 312,676,834,524.13
  5. Step 5: Solve for x
    x = 312,676,834,524.13/640,347.46
  6. Step 6: Final answer
    x = 488,292.46

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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.