Home / 693,370.80-1,040,056.20-338,612.40

Finding the Fourth Proportional to 693,370.80, 1,040,056.20 and 338,612.40

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Solution

The fourth proportional to 693,370.80, 1,040,056.20 and 338,612.40 is: 507,918.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,370.80 : 1,040,056.20 = 338,612.40 : x
  2. Step 2: Convert to fraction form
    693,370.80/1,040,056.20 = 338,612.40/x
  3. Step 3: Cross multiply
    693,370.80x = 1,040,056.20 × 338,612.40
  4. Step 4: Simplify right side
    693,370.80x = 352,175,926,016.88
  5. Step 5: Solve for x
    x = 352,175,926,016.88/693,370.80
  6. Step 6: Final answer
    x = 507,918.60

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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.