Home / 558,002.12-770,049.40-309,649.16

Finding the Fourth Proportional to 558,002.12, 770,049.40 and 309,649.16

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Solution

The fourth proportional to 558,002.12, 770,049.40 and 309,649.16 is: 427,319.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,002.12 : 770,049.40 = 309,649.16 : x
  2. Step 2: Convert to fraction form
    558,002.12/770,049.40 = 309,649.16/x
  3. Step 3: Cross multiply
    558,002.12x = 770,049.40 × 309,649.16
  4. Step 4: Simplify right side
    558,002.12x = 238,445,149,868.50
  5. Step 5: Solve for x
    x = 238,445,149,868.50/558,002.12
  6. Step 6: Final answer
    x = 427,319.43

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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.