Home / 630,919.38-870,664.32-344,439.48

Finding the Fourth Proportional to 630,919.38, 870,664.32 and 344,439.48

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Solution

The fourth proportional to 630,919.38, 870,664.32 and 344,439.48 is: 475,324.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,919.38 : 870,664.32 = 344,439.48 : x
  2. Step 2: Convert to fraction form
    630,919.38/870,664.32 = 344,439.48/x
  3. Step 3: Cross multiply
    630,919.38x = 870,664.32 × 344,439.48
  4. Step 4: Simplify right side
    630,919.38x = 299,891,165,635.35
  5. Step 5: Solve for x
    x = 299,891,165,635.35/630,919.38
  6. Step 6: Final answer
    x = 475,324.07

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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.