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Finding the Fourth Proportional to 618,622.86, 853,759.47 and 346,736.94

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Solution

The fourth proportional to 618,622.86, 853,759.47 and 346,736.94 is: 478,530.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,622.86 : 853,759.47 = 346,736.94 : x
  2. Step 2: Convert to fraction form
    618,622.86/853,759.47 = 346,736.94/x
  3. Step 3: Cross multiply
    618,622.86x = 853,759.47 × 346,736.94
  4. Step 4: Simplify right side
    618,622.86x = 296,029,946,123.82
  5. Step 5: Solve for x
    x = 296,029,946,123.82/618,622.86
  6. Step 6: Final answer
    x = 478,530.56

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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.