Home / 558,018.76-836,765.64-389,729.12

Finding the Fourth Proportional to 558,018.76, 836,765.64 and 389,729.12

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Solution

The fourth proportional to 558,018.76, 836,765.64 and 389,729.12 is: 584,410.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,018.76 : 836,765.64 = 389,729.12 : x
  2. Step 2: Convert to fraction form
    558,018.76/836,765.64 = 389,729.12/x
  3. Step 3: Cross multiply
    558,018.76x = 836,765.64 × 389,729.12
  4. Step 4: Simplify right side
    558,018.76x = 326,111,936,523.44
  5. Step 5: Solve for x
    x = 326,111,936,523.44/558,018.76
  6. Step 6: Final answer
    x = 584,410.35

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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.