Home / 413,097.40-619,646.10-388,214.20

Finding the Fourth Proportional to 413,097.40, 619,646.10 and 388,214.20

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Solution

The fourth proportional to 413,097.40, 619,646.10 and 388,214.20 is: 582,321.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,097.40 : 619,646.10 = 388,214.20 : x
  2. Step 2: Convert to fraction form
    413,097.40/619,646.10 = 388,214.20/x
  3. Step 3: Cross multiply
    413,097.40x = 619,646.10 × 388,214.20
  4. Step 4: Simplify right side
    413,097.40x = 240,555,414,994.62
  5. Step 5: Solve for x
    x = 240,555,414,994.62/413,097.40
  6. Step 6: Final answer
    x = 582,321.30

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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.