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Finding the Fourth Proportional to 640,747.26, 884,209.57 and 368,777.41

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Solution

The fourth proportional to 640,747.26, 884,209.57 and 368,777.41 is: 508,900.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,747.26 : 884,209.57 = 368,777.41 : x
  2. Step 2: Convert to fraction form
    640,747.26/884,209.57 = 368,777.41/x
  3. Step 3: Cross multiply
    640,747.26x = 884,209.57 × 368,777.41
  4. Step 4: Simplify right side
    640,747.26x = 326,076,511,989.35
  5. Step 5: Solve for x
    x = 326,076,511,989.35/640,747.26
  6. Step 6: Final answer
    x = 508,900.36

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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.