Home / 1,211,046.21-1,815,938.64-571,178.16

Finding the Fourth Proportional to 1,211,046.21, 1,815,938.64 and 571,178.16

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Solution

The fourth proportional to 1,211,046.21, 1,815,938.64 and 571,178.16 is: 856,469.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,046.21 : 1,815,938.64 = 571,178.16 : x
  2. Step 2: Convert to fraction form
    1,211,046.21/1,815,938.64 = 571,178.16/x
  3. Step 3: Cross multiply
    1,211,046.21x = 1,815,938.64 × 571,178.16
  4. Step 4: Simplify right side
    1,211,046.21x = 1,037,224,491,068.10
  5. Step 5: Solve for x
    x = 1,037,224,491,068.10/1,211,046.21
  6. Step 6: Final answer
    x = 856,469.79

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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.