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Finding the Fourth Proportional to 618,520.26, 853,558.08 and 376,802.76

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Solution

The fourth proportional to 618,520.26, 853,558.08 and 376,802.76 is: 519,987.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,520.26 : 853,558.08 = 376,802.76 : x
  2. Step 2: Convert to fraction form
    618,520.26/853,558.08 = 376,802.76/x
  3. Step 3: Cross multiply
    618,520.26x = 853,558.08 × 376,802.76
  4. Step 4: Simplify right side
    618,520.26x = 321,623,040,364.30
  5. Step 5: Solve for x
    x = 321,623,040,364.30/618,520.26
  6. Step 6: Final answer
    x = 519,987.88

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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.