Home / 618,669.28-853,908.24-403,434.46

Finding the Fourth Proportional to 618,669.28, 853,908.24 and 403,434.46

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Solution

The fourth proportional to 618,669.28, 853,908.24 and 403,434.46 is: 556,833.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,669.28 : 853,908.24 = 403,434.46 : x
  2. Step 2: Convert to fraction form
    618,669.28/853,908.24 = 403,434.46/x
  3. Step 3: Cross multiply
    618,669.28x = 853,908.24 × 403,434.46
  4. Step 4: Simplify right side
    618,669.28x = 344,496,009,693.95
  5. Step 5: Solve for x
    x = 344,496,009,693.95/618,669.28
  6. Step 6: Final answer
    x = 556,833.87

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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.