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Finding the Fourth Proportional to 618,300.23, 853,239.43 and 346,379.59

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Solution

The fourth proportional to 618,300.23, 853,239.43 and 346,379.59 is: 477,995.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,300.23 : 853,239.43 = 346,379.59 : x
  2. Step 2: Convert to fraction form
    618,300.23/853,239.43 = 346,379.59/x
  3. Step 3: Cross multiply
    618,300.23x = 853,239.43 × 346,379.59
  4. Step 4: Simplify right side
    618,300.23x = 295,544,723,935.23
  5. Step 5: Solve for x
    x = 295,544,723,935.23/618,300.23
  6. Step 6: Final answer
    x = 477,995.49

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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.