Home / 619,123.76-854,028.80-389,317.36

Finding the Fourth Proportional to 619,123.76, 854,028.80 and 389,317.36

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Solution

The fourth proportional to 619,123.76, 854,028.80 and 389,317.36 is: 537,030.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,123.76 : 854,028.80 = 389,317.36 : x
  2. Step 2: Convert to fraction form
    619,123.76/854,028.80 = 389,317.36/x
  3. Step 3: Cross multiply
    619,123.76x = 854,028.80 × 389,317.36
  4. Step 4: Simplify right side
    619,123.76x = 332,488,237,779.97
  5. Step 5: Solve for x
    x = 332,488,237,779.97/619,123.76
  6. Step 6: Final answer
    x = 537,030.33

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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.