Home / 491,025,377.12-678,501,395.10-349,651,156.20

Finding the Fourth Proportional to 491,025,377.12, 678,501,395.10 and 349,651,156.20

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Solution

The fourth proportional to 491,025,377.12, 678,501,395.10 and 349,651,156.20 is: 483,149,768.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,025,377.12 : 678,501,395.10 = 349,651,156.20 : x
  2. Step 2: Convert to fraction form
    491,025,377.12/678,501,395.10 = 349,651,156.20/x
  3. Step 3: Cross multiply
    491,025,377.12x = 678,501,395.10 × 349,651,156.20
  4. Step 4: Simplify right side
    491,025,377.12x = 237,238,797,280,028,000
  5. Step 5: Solve for x
    x = 237,238,797,280,028,000/491,025,377.12
  6. Step 6: Final answer
    x = 483,149,768.50

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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.