Home / 386,607.98-579,973.26-120,429.56

Finding the Fourth Proportional to 386,607.98, 579,973.26 and 120,429.56

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Solution

The fourth proportional to 386,607.98, 579,973.26 and 120,429.56 is: 180,663.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,607.98 : 579,973.26 = 120,429.56 : x
  2. Step 2: Convert to fraction form
    386,607.98/579,973.26 = 120,429.56/x
  3. Step 3: Cross multiply
    386,607.98x = 579,973.26 × 120,429.56
  4. Step 4: Simplify right side
    386,607.98x = 69,845,924,513.57
  5. Step 5: Solve for x
    x = 69,845,924,513.57/386,607.98
  6. Step 6: Final answer
    x = 180,663.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.