Home / 443,605.20-665,979.84-380,828.76

Finding the Fourth Proportional to 443,605.20, 665,979.84 and 380,828.76

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Solution

The fourth proportional to 443,605.20, 665,979.84 and 380,828.76 is: 571,734.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,605.20 : 665,979.84 = 380,828.76 : x
  2. Step 2: Convert to fraction form
    443,605.20/665,979.84 = 380,828.76/x
  3. Step 3: Cross multiply
    443,605.20x = 665,979.84 × 380,828.76
  4. Step 4: Simplify right side
    443,605.20x = 253,624,276,652.20
  5. Step 5: Solve for x
    x = 253,624,276,652.20/443,605.20
  6. Step 6: Final answer
    x = 571,734.23

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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.