Home / 721,840.74-1,082,388.03-316,867.20

Finding the Fourth Proportional to 721,840.74, 1,082,388.03 and 316,867.20

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Solution

The fourth proportional to 721,840.74, 1,082,388.03 and 316,867.20 is: 475,137.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,840.74 : 1,082,388.03 = 316,867.20 : x
  2. Step 2: Convert to fraction form
    721,840.74/1,082,388.03 = 316,867.20/x
  3. Step 3: Cross multiply
    721,840.74x = 1,082,388.03 × 316,867.20
  4. Step 4: Simplify right side
    721,840.74x = 342,973,264,379.62
  5. Step 5: Solve for x
    x = 342,973,264,379.62/721,840.74
  6. Step 6: Final answer
    x = 475,137.03

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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.