Home / 721,354.33-1,082,329.44-316,336.89

Finding the Fourth Proportional to 721,354.33, 1,082,329.44 and 316,336.89

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Solution

The fourth proportional to 721,354.33, 1,082,329.44 and 316,336.89 is: 474,635.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,354.33 : 1,082,329.44 = 316,336.89 : x
  2. Step 2: Convert to fraction form
    721,354.33/1,082,329.44 = 316,336.89/x
  3. Step 3: Cross multiply
    721,354.33x = 1,082,329.44 × 316,336.89
  4. Step 4: Simplify right side
    721,354.33x = 342,380,729,005.04
  5. Step 5: Solve for x
    x = 342,380,729,005.04/721,354.33
  6. Step 6: Final answer
    x = 474,635.99

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1.5x scale

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.