Home / 813,932.96-1,221,074.40-274,242.88

Finding the Fourth Proportional to 813,932.96, 1,221,074.40 and 274,242.88

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Solution

The fourth proportional to 813,932.96, 1,221,074.40 and 274,242.88 is: 411,423.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,932.96 : 1,221,074.40 = 274,242.88 : x
  2. Step 2: Convert to fraction form
    813,932.96/1,221,074.40 = 274,242.88/x
  3. Step 3: Cross multiply
    813,932.96x = 1,221,074.40 × 274,242.88
  4. Step 4: Simplify right side
    813,932.96x = 334,870,960,150.27
  5. Step 5: Solve for x
    x = 334,870,960,150.27/813,932.96
  6. Step 6: Final answer
    x = 411,423.27

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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.