Home / 764,856.33-1,146,442.32-315,330.63

Finding the Fourth Proportional to 764,856.33, 1,146,442.32 and 315,330.63

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Solution

The fourth proportional to 764,856.33, 1,146,442.32 and 315,330.63 is: 472,648.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,856.33 : 1,146,442.32 = 315,330.63 : x
  2. Step 2: Convert to fraction form
    764,856.33/1,146,442.32 = 315,330.63/x
  3. Step 3: Cross multiply
    764,856.33x = 1,146,442.32 × 315,330.63
  4. Step 4: Simplify right side
    764,856.33x = 361,508,379,024.26
  5. Step 5: Solve for x
    x = 361,508,379,024.26/764,856.33
  6. Step 6: Final answer
    x = 472,648.74

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Double scale
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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.