Home / 691,805.20-1,037,902.20-336,830.80

Finding the Fourth Proportional to 691,805.20, 1,037,902.20 and 336,830.80

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Solution

The fourth proportional to 691,805.20, 1,037,902.20 and 336,830.80 is: 505,340.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,805.20 : 1,037,902.20 = 336,830.80 : x
  2. Step 2: Convert to fraction form
    691,805.20/1,037,902.20 = 336,830.80/x
  3. Step 3: Cross multiply
    691,805.20x = 1,037,902.20 × 336,830.80
  4. Step 4: Simplify right side
    691,805.20x = 349,597,428,347.76
  5. Step 5: Solve for x
    x = 349,597,428,347.76/691,805.20
  6. Step 6: Final answer
    x = 505,340.85

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1.5x scale

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.