Home / 491,855,130.64-678,758,432.40-268,836,683.09

Finding the Fourth Proportional to 491,855,130.64, 678,758,432.40 and 268,836,683.09

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Solution

The fourth proportional to 491,855,130.64, 678,758,432.40 and 268,836,683.09 is: 370,993,721.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,855,130.64 : 678,758,432.40 = 268,836,683.09 : x
  2. Step 2: Convert to fraction form
    491,855,130.64/678,758,432.40 = 268,836,683.09/x
  3. Step 3: Cross multiply
    491,855,130.64x = 678,758,432.40 × 268,836,683.09
  4. Step 4: Simplify right side
    491,855,130.64x = 182,475,165,583,415,008
  5. Step 5: Solve for x
    x = 182,475,165,583,415,008/491,855,130.64
  6. Step 6: Final answer
    x = 370,993,721.97

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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.