Home / 411,390.12-616,446.90-285,276.36

Finding the Fourth Proportional to 411,390.12, 616,446.90 and 285,276.36

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Solution

The fourth proportional to 411,390.12, 616,446.90 and 285,276.36 is: 427,471.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,390.12 : 616,446.90 = 285,276.36 : x
  2. Step 2: Convert to fraction form
    411,390.12/616,446.90 = 285,276.36/x
  3. Step 3: Cross multiply
    411,390.12x = 616,446.90 × 285,276.36
  4. Step 4: Simplify right side
    411,390.12x = 175,857,727,765.28
  5. Step 5: Solve for x
    x = 175,857,727,765.28/411,390.12
  6. Step 6: Final answer
    x = 427,471.93

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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.