Home / 634,321.02-949,498.65-409,380.78

Finding the Fourth Proportional to 634,321.02, 949,498.65 and 409,380.78

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Solution

The fourth proportional to 634,321.02, 949,498.65 and 409,380.78 is: 612,791.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,321.02 : 949,498.65 = 409,380.78 : x
  2. Step 2: Convert to fraction form
    634,321.02/949,498.65 = 409,380.78/x
  3. Step 3: Cross multiply
    634,321.02x = 949,498.65 × 409,380.78
  4. Step 4: Simplify right side
    634,321.02x = 388,706,497,945.95
  5. Step 5: Solve for x
    x = 388,706,497,945.95/634,321.02
  6. Step 6: Final answer
    x = 612,791.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.