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Finding the Fourth Proportional to 630,906.80, 870,664.56 and 344,438.96

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Solution

The fourth proportional to 630,906.80, 870,664.56 and 344,438.96 is: 475,332.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,906.80 : 870,664.56 = 344,438.96 : x
  2. Step 2: Convert to fraction form
    630,906.80/870,664.56 = 344,438.96/x
  3. Step 3: Cross multiply
    630,906.80x = 870,664.56 × 344,438.96
  4. Step 4: Simplify right side
    630,906.80x = 299,890,795,555.26
  5. Step 5: Solve for x
    x = 299,890,795,555.26/630,906.80
  6. Step 6: Final answer
    x = 475,332.96

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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.