Home / 1,219,635.72-1,829,123.10-509,515.20

Finding the Fourth Proportional to 1,219,635.72, 1,829,123.10 and 509,515.20

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Solution

The fourth proportional to 1,219,635.72, 1,829,123.10 and 509,515.20 is: 764,134.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219,635.72 : 1,829,123.10 = 509,515.20 : x
  2. Step 2: Convert to fraction form
    1,219,635.72/1,829,123.10 = 509,515.20/x
  3. Step 3: Cross multiply
    1,219,635.72x = 1,829,123.10 × 509,515.20
  4. Step 4: Simplify right side
    1,219,635.72x = 931,966,022,121.12
  5. Step 5: Solve for x
    x = 931,966,022,121.12/1,219,635.72
  6. Step 6: Final answer
    x = 764,134.74

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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.