Home / 619,128.78-854,035.77-389,322.24

Finding the Fourth Proportional to 619,128.78, 854,035.77 and 389,322.24

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Solution

The fourth proportional to 619,128.78, 854,035.77 and 389,322.24 is: 537,037.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,128.78 : 854,035.77 = 389,322.24 : x
  2. Step 2: Convert to fraction form
    619,128.78/854,035.77 = 389,322.24/x
  3. Step 3: Cross multiply
    619,128.78x = 854,035.77 × 389,322.24
  4. Step 4: Simplify right side
    619,128.78x = 332,495,117,273.85
  5. Step 5: Solve for x
    x = 332,495,117,273.85/619,128.78
  6. Step 6: Final answer
    x = 537,037.09

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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.