Home / 579,218.90-869,087.55-263,513.30

Finding the Fourth Proportional to 579,218.90, 869,087.55 and 263,513.30

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Solution

The fourth proportional to 579,218.90, 869,087.55 and 263,513.30 is: 395,387.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,218.90 : 869,087.55 = 263,513.30 : x
  2. Step 2: Convert to fraction form
    579,218.90/869,087.55 = 263,513.30/x
  3. Step 3: Cross multiply
    579,218.90x = 869,087.55 × 263,513.30
  4. Step 4: Simplify right side
    579,218.90x = 229,016,128,289.42
  5. Step 5: Solve for x
    x = 229,016,128,289.42/579,218.90
  6. Step 6: Final answer
    x = 395,387.87

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Double scale
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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.