Home / 411,316.40-617,896.20-394,522.80

Finding the Fourth Proportional to 411,316.40, 617,896.20 and 394,522.80

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Solution

The fourth proportional to 411,316.40, 617,896.20 and 394,522.80 is: 592,668.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,316.40 : 617,896.20 = 394,522.80 : x
  2. Step 2: Convert to fraction form
    411,316.40/617,896.20 = 394,522.80/x
  3. Step 3: Cross multiply
    411,316.40x = 617,896.20 × 394,522.80
  4. Step 4: Simplify right side
    411,316.40x = 243,774,138,933.36
  5. Step 5: Solve for x
    x = 243,774,138,933.36/411,316.40
  6. Step 6: Final answer
    x = 592,668.17

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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.