Home / 619,116.15-854,018.30-389,309.73

Finding the Fourth Proportional to 619,116.15, 854,018.30 and 389,309.73

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Solution

The fourth proportional to 619,116.15, 854,018.30 and 389,309.73 is: 537,019.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,116.15 : 854,018.30 = 389,309.73 : x
  2. Step 2: Convert to fraction form
    619,116.15/854,018.30 = 389,309.73/x
  3. Step 3: Cross multiply
    619,116.15x = 854,018.30 × 389,309.73
  4. Step 4: Simplify right side
    619,116.15x = 332,477,633,788.06
  5. Step 5: Solve for x
    x = 332,477,633,788.06/619,116.15
  6. Step 6: Final answer
    x = 537,019.80

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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.