Home / 413,099.40-619,649.10-388,216.20

Finding the Fourth Proportional to 413,099.40, 619,649.10 and 388,216.20

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Solution

The fourth proportional to 413,099.40, 619,649.10 and 388,216.20 is: 582,324.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,099.40 : 619,649.10 = 388,216.20 : x
  2. Step 2: Convert to fraction form
    413,099.40/619,649.10 = 388,216.20/x
  3. Step 3: Cross multiply
    413,099.40x = 619,649.10 × 388,216.20
  4. Step 4: Simplify right side
    413,099.40x = 240,557,818,935.42
  5. Step 5: Solve for x
    x = 240,557,818,935.42/413,099.40
  6. Step 6: Final answer
    x = 582,324.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.