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Finding the Fourth Proportional to 630,610.79, 870,261.37 and 344,149.29

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Solution

The fourth proportional to 630,610.79, 870,261.37 and 344,149.29 is: 474,936.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,610.79 : 870,261.37 = 344,149.29 : x
  2. Step 2: Convert to fraction form
    630,610.79/870,261.37 = 344,149.29/x
  3. Step 3: Cross multiply
    630,610.79x = 870,261.37 × 344,149.29
  4. Step 4: Simplify right side
    630,610.79x = 299,499,831,739.55
  5. Step 5: Solve for x
    x = 299,499,831,739.55/630,610.79
  6. Step 6: Final answer
    x = 474,936.11

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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.