Home / 558,744.20-838,116.30-389,907.80

Finding the Fourth Proportional to 558,744.20, 838,116.30 and 389,907.80

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Solution

The fourth proportional to 558,744.20, 838,116.30 and 389,907.80 is: 584,861.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,744.20 : 838,116.30 = 389,907.80 : x
  2. Step 2: Convert to fraction form
    558,744.20/838,116.30 = 389,907.80/x
  3. Step 3: Cross multiply
    558,744.20x = 838,116.30 × 389,907.80
  4. Step 4: Simplify right side
    558,744.20x = 326,788,082,677.14
  5. Step 5: Solve for x
    x = 326,788,082,677.14/558,744.20
  6. Step 6: Final answer
    x = 584,861.70

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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.