Home / 619,115.77-854,017.78-389,309.35

Finding the Fourth Proportional to 619,115.77, 854,017.78 and 389,309.35

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Solution

The fourth proportional to 619,115.77, 854,017.78 and 389,309.35 is: 537,019.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,115.77 : 854,017.78 = 389,309.35 : x
  2. Step 2: Convert to fraction form
    619,115.77/854,017.78 = 389,309.35/x
  3. Step 3: Cross multiply
    619,115.77x = 854,017.78 × 389,309.35
  4. Step 4: Simplify right side
    619,115.77x = 332,477,106,820.24
  5. Step 5: Solve for x
    x = 332,477,106,820.24/619,115.77
  6. Step 6: Final answer
    x = 537,019.28

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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.