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Finding the Fourth Proportional to 618,058.31, 852,900.53 and 342,404.81

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Solution

The fourth proportional to 618,058.31, 852,900.53 and 342,404.81 is: 472,507.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,058.31 : 852,900.53 = 342,404.81 : x
  2. Step 2: Convert to fraction form
    618,058.31/852,900.53 = 342,404.81/x
  3. Step 3: Cross multiply
    618,058.31x = 852,900.53 × 342,404.81
  4. Step 4: Simplify right side
    618,058.31x = 292,037,246,619.78
  5. Step 5: Solve for x
    x = 292,037,246,619.78/618,058.31
  6. Step 6: Final answer
    x = 472,507.60

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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.