Home / 992,800.20-1,489,200.30-393,904.20

Finding the Fourth Proportional to 992,800.20, 1,489,200.30 and 393,904.20

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Solution

The fourth proportional to 992,800.20, 1,489,200.30 and 393,904.20 is: 590,856.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,800.20 : 1,489,200.30 = 393,904.20 : x
  2. Step 2: Convert to fraction form
    992,800.20/1,489,200.30 = 393,904.20/x
  3. Step 3: Cross multiply
    992,800.20x = 1,489,200.30 × 393,904.20
  4. Step 4: Simplify right side
    992,800.20x = 586,602,252,811.26
  5. Step 5: Solve for x
    x = 586,602,252,811.26/992,800.20
  6. Step 6: Final answer
    x = 590,856.30

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Half scale
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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.