Home / 824,776.96-1,138,138.32-485,179.60

Finding the Fourth Proportional to 824,776.96, 1,138,138.32 and 485,179.60

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Solution

The fourth proportional to 824,776.96, 1,138,138.32 and 485,179.60 is: 669,516.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    824,776.96 : 1,138,138.32 = 485,179.60 : x
  2. Step 2: Convert to fraction form
    824,776.96/1,138,138.32 = 485,179.60/x
  3. Step 3: Cross multiply
    824,776.96x = 1,138,138.32 × 485,179.60
  4. Step 4: Simplify right side
    824,776.96x = 552,201,494,842.27
  5. Step 5: Solve for x
    x = 552,201,494,842.27/824,776.96
  6. Step 6: Final answer
    x = 669,516.15

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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.