Home / 862,208.96-1,189,817.52-480,215.12

Finding the Fourth Proportional to 862,208.96, 1,189,817.52 and 480,215.12

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Solution

The fourth proportional to 862,208.96, 1,189,817.52 and 480,215.12 is: 662,679.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,208.96 : 1,189,817.52 = 480,215.12 : x
  2. Step 2: Convert to fraction form
    862,208.96/1,189,817.52 = 480,215.12/x
  3. Step 3: Cross multiply
    862,208.96x = 1,189,817.52 × 480,215.12
  4. Step 4: Simplify right side
    862,208.96x = 571,368,363,144.90
  5. Step 5: Solve for x
    x = 571,368,363,144.90/862,208.96
  6. Step 6: Final answer
    x = 662,679.69

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.