Home / 813,931.96-1,221,072.90-274,241.88

Finding the Fourth Proportional to 813,931.96, 1,221,072.90 and 274,241.88

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Solution

The fourth proportional to 813,931.96, 1,221,072.90 and 274,241.88 is: 411,421.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,931.96 : 1,221,072.90 = 274,241.88 : x
  2. Step 2: Convert to fraction form
    813,931.96/1,221,072.90 = 274,241.88/x
  3. Step 3: Cross multiply
    813,931.96x = 1,221,072.90 × 274,241.88
  4. Step 4: Simplify right side
    813,931.96x = 334,869,327,713.05
  5. Step 5: Solve for x
    x = 334,869,327,713.05/813,931.96
  6. Step 6: Final answer
    x = 411,421.77

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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.