Home / 862,108.53-1,189,709.82-480,135.30

Finding the Fourth Proportional to 862,108.53, 1,189,709.82 and 480,135.30

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Solution

The fourth proportional to 862,108.53, 1,189,709.82 and 480,135.30 is: 662,586.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,108.53 : 1,189,709.82 = 480,135.30 : x
  2. Step 2: Convert to fraction form
    862,108.53/1,189,709.82 = 480,135.30/x
  3. Step 3: Cross multiply
    862,108.53x = 1,189,709.82 × 480,135.30
  4. Step 4: Simplify right side
    862,108.53x = 571,221,681,338.65
  5. Step 5: Solve for x
    x = 571,221,681,338.65/862,108.53
  6. Step 6: Final answer
    x = 662,586.74

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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.