Home / 699,040.80-1,048,561.20-225,741.60

Finding the Fourth Proportional to 699,040.80, 1,048,561.20 and 225,741.60

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Solution

The fourth proportional to 699,040.80, 1,048,561.20 and 225,741.60 is: 338,612.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,040.80 : 1,048,561.20 = 225,741.60 : x
  2. Step 2: Convert to fraction form
    699,040.80/1,048,561.20 = 225,741.60/x
  3. Step 3: Cross multiply
    699,040.80x = 1,048,561.20 × 225,741.60
  4. Step 4: Simplify right side
    699,040.80x = 236,703,882,985.92
  5. Step 5: Solve for x
    x = 236,703,882,985.92/699,040.80
  6. Step 6: Final answer
    x = 338,612.40

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Double scale
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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.