Home / 530,114.10-731,540.79-288,390.48

Finding the Fourth Proportional to 530,114.10, 731,540.79 and 288,390.48

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Solution

The fourth proportional to 530,114.10, 731,540.79 and 288,390.48 is: 397,969.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,114.10 : 731,540.79 = 288,390.48 : x
  2. Step 2: Convert to fraction form
    530,114.10/731,540.79 = 288,390.48/x
  3. Step 3: Cross multiply
    530,114.10x = 731,540.79 × 288,390.48
  4. Step 4: Simplify right side
    530,114.10x = 210,969,399,567.68
  5. Step 5: Solve for x
    x = 210,969,399,567.68/530,114.10
  6. Step 6: Final answer
    x = 397,969.79

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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.