Home / 491,494,220.40-678,264,335.89-268,478,996.02

Finding the Fourth Proportional to 491,494,220.40, 678,264,335.89 and 268,478,996.02

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Solution

The fourth proportional to 491,494,220.40, 678,264,335.89 and 268,478,996.02 is: 370,502,277.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,494,220.40 : 678,264,335.89 = 268,478,996.02 : x
  2. Step 2: Convert to fraction form
    491,494,220.40/678,264,335.89 = 268,478,996.02/x
  3. Step 3: Cross multiply
    491,494,220.40x = 678,264,335.89 × 268,478,996.02
  4. Step 4: Simplify right side
    491,494,220.40x = 182,099,727,935,919,232
  5. Step 5: Solve for x
    x = 182,099,727,935,919,232/491,494,220.40
  6. Step 6: Final answer
    x = 370,502,277.30

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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.