Home / 558,799.30-838,401.72-345,318.40

Finding the Fourth Proportional to 558,799.30, 838,401.72 and 345,318.40

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Solution

The fourth proportional to 558,799.30, 838,401.72 and 345,318.40 is: 518,102.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,799.30 : 838,401.72 = 345,318.40 : x
  2. Step 2: Convert to fraction form
    558,799.30/838,401.72 = 345,318.40/x
  3. Step 3: Cross multiply
    558,799.30x = 838,401.72 × 345,318.40
  4. Step 4: Simplify right side
    558,799.30x = 289,515,540,507.65
  5. Step 5: Solve for x
    x = 289,515,540,507.65/558,799.30
  6. Step 6: Final answer
    x = 518,102.90

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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.