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Finding the Fourth Proportional to 618,356.57, 853,330.18 and 342,732.02

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Solution

The fourth proportional to 618,356.57, 853,330.18 and 342,732.02 is: 472,969.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,356.57 : 853,330.18 = 342,732.02 : x
  2. Step 2: Convert to fraction form
    618,356.57/853,330.18 = 342,732.02/x
  3. Step 3: Cross multiply
    618,356.57x = 853,330.18 × 342,732.02
  4. Step 4: Simplify right side
    618,356.57x = 292,463,576,318.36
  5. Step 5: Solve for x
    x = 292,463,576,318.36/618,356.57
  6. Step 6: Final answer
    x = 472,969.14

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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.