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Finding the Fourth Proportional to 605,856.30, 908,784.45 and 307,257.90

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Solution

The fourth proportional to 605,856.30, 908,784.45 and 307,257.90 is: 460,886.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,856.30 : 908,784.45 = 307,257.90 : x
  2. Step 2: Convert to fraction form
    605,856.30/908,784.45 = 307,257.90/x
  3. Step 3: Cross multiply
    605,856.30x = 908,784.45 × 307,257.90
  4. Step 4: Simplify right side
    605,856.30x = 279,231,201,659.66
  5. Step 5: Solve for x
    x = 279,231,201,659.66/605,856.30
  6. Step 6: Final answer
    x = 460,886.85

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Similar ratio
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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.