Home / 753,861.15-1,130,266.85-280,419.39

Finding the Fourth Proportional to 753,861.15, 1,130,266.85 and 280,419.39

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Solution

The fourth proportional to 753,861.15, 1,130,266.85 and 280,419.39 is: 420,433.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,861.15 : 1,130,266.85 = 280,419.39 : x
  2. Step 2: Convert to fraction form
    753,861.15/1,130,266.85 = 280,419.39/x
  3. Step 3: Cross multiply
    753,861.15x = 1,130,266.85 × 280,419.39
  4. Step 4: Simplify right side
    753,861.15x = 316,948,739,212.13
  5. Step 5: Solve for x
    x = 316,948,739,212.13/753,861.15
  6. Step 6: Final answer
    x = 420,433.84

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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.