Home / 491,494,218.64-678,264,333.47-268,478,994.27

Finding the Fourth Proportional to 491,494,218.64, 678,264,333.47 and 268,478,994.27

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Solution

The fourth proportional to 491,494,218.64, 678,264,333.47 and 268,478,994.27 is: 370,502,274.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,494,218.64 : 678,264,333.47 = 268,478,994.27 : x
  2. Step 2: Convert to fraction form
    491,494,218.64/678,264,333.47 = 268,478,994.27/x
  3. Step 3: Cross multiply
    491,494,218.64x = 678,264,333.47 × 268,478,994.27
  4. Step 4: Simplify right side
    491,494,218.64x = 182,099,726,098,378,496
  5. Step 5: Solve for x
    x = 182,099,726,098,378,496/491,494,218.64
  6. Step 6: Final answer
    x = 370,502,274.88

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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.