Home / 389,973.66-585,047.91-123,742.86

Finding the Fourth Proportional to 389,973.66, 585,047.91 and 123,742.86

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Solution

The fourth proportional to 389,973.66, 585,047.91 and 123,742.86 is: 185,642.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,973.66 : 585,047.91 = 123,742.86 : x
  2. Step 2: Convert to fraction form
    389,973.66/585,047.91 = 123,742.86/x
  3. Step 3: Cross multiply
    389,973.66x = 585,047.91 × 123,742.86
  4. Step 4: Simplify right side
    389,973.66x = 72,395,501,620.42
  5. Step 5: Solve for x
    x = 72,395,501,620.42/389,973.66
  6. Step 6: Final answer
    x = 185,642.03

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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.