Home / 693,109.80-1,039,664.70-319,861.80

Finding the Fourth Proportional to 693,109.80, 1,039,664.70 and 319,861.80

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Solution

The fourth proportional to 693,109.80, 1,039,664.70 and 319,861.80 is: 479,792.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,109.80 : 1,039,664.70 = 319,861.80 : x
  2. Step 2: Convert to fraction form
    693,109.80/1,039,664.70 = 319,861.80/x
  3. Step 3: Cross multiply
    693,109.80x = 1,039,664.70 × 319,861.80
  4. Step 4: Simplify right side
    693,109.80x = 332,549,022,338.46
  5. Step 5: Solve for x
    x = 332,549,022,338.46/693,109.80
  6. Step 6: Final answer
    x = 479,792.70

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Similar ratio
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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.