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Finding the Fourth Proportional to 618,526.80, 853,978.14 and 475,030.44

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Solution

The fourth proportional to 618,526.80, 853,978.14 and 475,030.44 is: 655,857.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,526.80 : 853,978.14 = 475,030.44 : x
  2. Step 2: Convert to fraction form
    618,526.80/853,978.14 = 475,030.44/x
  3. Step 3: Cross multiply
    618,526.80x = 853,978.14 × 475,030.44
  4. Step 4: Simplify right side
    618,526.80x = 405,665,611,594.58
  5. Step 5: Solve for x
    x = 405,665,611,594.58/618,526.80
  6. Step 6: Final answer
    x = 655,857.78

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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.