Home / 669,794.40-1,004,691.60-386,359.20

Finding the Fourth Proportional to 669,794.40, 1,004,691.60 and 386,359.20

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Solution

The fourth proportional to 669,794.40, 1,004,691.60 and 386,359.20 is: 579,538.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,794.40 : 1,004,691.60 = 386,359.20 : x
  2. Step 2: Convert to fraction form
    669,794.40/1,004,691.60 = 386,359.20/x
  3. Step 3: Cross multiply
    669,794.40x = 1,004,691.60 × 386,359.20
  4. Step 4: Simplify right side
    669,794.40x = 388,171,842,822.72
  5. Step 5: Solve for x
    x = 388,171,842,822.72/669,794.40
  6. Step 6: Final answer
    x = 579,538.80

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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.