Home / 579,319.40-869,238.30-263,613.80

Finding the Fourth Proportional to 579,319.40, 869,238.30 and 263,613.80

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Solution

The fourth proportional to 579,319.40, 869,238.30 and 263,613.80 is: 395,538.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,319.40 : 869,238.30 = 263,613.80 : x
  2. Step 2: Convert to fraction form
    579,319.40/869,238.30 = 263,613.80/x
  3. Step 3: Cross multiply
    579,319.40x = 869,238.30 × 263,613.80
  4. Step 4: Simplify right side
    579,319.40x = 229,143,211,368.54
  5. Step 5: Solve for x
    x = 229,143,211,368.54/579,319.40
  6. Step 6: Final answer
    x = 395,538.65

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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.