Home / 792,387.40-1,189,358.70-393,478.60

Finding the Fourth Proportional to 792,387.40, 1,189,358.70 and 393,478.60

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Solution

The fourth proportional to 792,387.40, 1,189,358.70 and 393,478.60 is: 590,604.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    792,387.40 : 1,189,358.70 = 393,478.60 : x
  2. Step 2: Convert to fraction form
    792,387.40/1,189,358.70 = 393,478.60/x
  3. Step 3: Cross multiply
    792,387.40x = 1,189,358.70 × 393,478.60
  4. Step 4: Simplify right side
    792,387.40x = 467,987,196,173.82
  5. Step 5: Solve for x
    x = 467,987,196,173.82/792,387.40
  6. Step 6: Final answer
    x = 590,604.04

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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.