Home / 816,230.40-1,224,345.60-396,326.40

Finding the Fourth Proportional to 816,230.40, 1,224,345.60 and 396,326.40

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Solution

The fourth proportional to 816,230.40, 1,224,345.60 and 396,326.40 is: 594,489.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,230.40 : 1,224,345.60 = 396,326.40 : x
  2. Step 2: Convert to fraction form
    816,230.40/1,224,345.60 = 396,326.40/x
  3. Step 3: Cross multiply
    816,230.40x = 1,224,345.60 × 396,326.40
  4. Step 4: Simplify right side
    816,230.40x = 485,240,484,003.84
  5. Step 5: Solve for x
    x = 485,240,484,003.84/816,230.40
  6. Step 6: Final answer
    x = 594,489.60

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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.