Home / 619,129.76-854,037.08-389,323.36

Finding the Fourth Proportional to 619,129.76, 854,037.08 and 389,323.36

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Solution

The fourth proportional to 619,129.76, 854,037.08 and 389,323.36 is: 537,038.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,129.76 : 854,037.08 = 389,323.36 : x
  2. Step 2: Convert to fraction form
    619,129.76/854,037.08 = 389,323.36/x
  3. Step 3: Cross multiply
    619,129.76x = 854,037.08 × 389,323.36
  4. Step 4: Simplify right side
    619,129.76x = 332,496,585,550.19
  5. Step 5: Solve for x
    x = 332,496,585,550.19/619,129.76
  6. Step 6: Final answer
    x = 537,038.61

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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.