Home / 491,494,220.15-678,264,335.54-268,478,995.77

Finding the Fourth Proportional to 491,494,220.15, 678,264,335.54 and 268,478,995.77

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Solution

The fourth proportional to 491,494,220.15, 678,264,335.54 and 268,478,995.77 is: 370,502,276.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,494,220.15 : 678,264,335.54 = 268,478,995.77 : x
  2. Step 2: Convert to fraction form
    491,494,220.15/678,264,335.54 = 268,478,995.77/x
  3. Step 3: Cross multiply
    491,494,220.15x = 678,264,335.54 × 268,478,995.77
  4. Step 4: Simplify right side
    491,494,220.15x = 182,099,727,672,385,504
  5. Step 5: Solve for x
    x = 182,099,727,672,385,504/491,494,220.15
  6. Step 6: Final answer
    x = 370,502,276.95

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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.