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Finding the Fourth Proportional to 630,961.68, 870,722.63 and 344,481.77

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Solution

The fourth proportional to 630,961.68, 870,722.63 and 344,481.77 is: 475,382.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,961.68 : 870,722.63 = 344,481.77 : x
  2. Step 2: Convert to fraction form
    630,961.68/870,722.63 = 344,481.77/x
  3. Step 3: Cross multiply
    630,961.68x = 870,722.63 × 344,481.77
  4. Step 4: Simplify right side
    630,961.68x = 299,948,066,685.43
  5. Step 5: Solve for x
    x = 299,948,066,685.43/630,961.68
  6. Step 6: Final answer
    x = 475,382.38

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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.