Home / 890,739.40-1,336,109.10-259,673.80

Finding the Fourth Proportional to 890,739.40, 1,336,109.10 and 259,673.80

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Solution

The fourth proportional to 890,739.40, 1,336,109.10 and 259,673.80 is: 389,510.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,739.40 : 1,336,109.10 = 259,673.80 : x
  2. Step 2: Convert to fraction form
    890,739.40/1,336,109.10 = 259,673.80/x
  3. Step 3: Cross multiply
    890,739.40x = 1,336,109.10 × 259,673.80
  4. Step 4: Simplify right side
    890,739.40x = 346,952,527,211.58
  5. Step 5: Solve for x
    x = 346,952,527,211.58/890,739.40
  6. Step 6: Final answer
    x = 389,510.70

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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.