Home / 455,231.40-681,291.90-399,244.20

Finding the Fourth Proportional to 455,231.40, 681,291.90 and 399,244.20

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Solution

The fourth proportional to 455,231.40, 681,291.90 and 399,244.20 is: 597,502.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,231.40 : 681,291.90 = 399,244.20 : x
  2. Step 2: Convert to fraction form
    455,231.40/681,291.90 = 399,244.20/x
  3. Step 3: Cross multiply
    455,231.40x = 681,291.90 × 399,244.20
  4. Step 4: Simplify right side
    455,231.40x = 272,001,839,581.98
  5. Step 5: Solve for x
    x = 272,001,839,581.98/455,231.40
  6. Step 6: Final answer
    x = 597,502.37

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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.