Home / 684,984.60-1,027,476.90-311,007.60

Finding the Fourth Proportional to 684,984.60, 1,027,476.90 and 311,007.60

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Solution

The fourth proportional to 684,984.60, 1,027,476.90 and 311,007.60 is: 466,511.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,984.60 : 1,027,476.90 = 311,007.60 : x
  2. Step 2: Convert to fraction form
    684,984.60/1,027,476.90 = 311,007.60/x
  3. Step 3: Cross multiply
    684,984.60x = 1,027,476.90 × 311,007.60
  4. Step 4: Simplify right side
    684,984.60x = 319,553,124,724.44
  5. Step 5: Solve for x
    x = 319,553,124,724.44/684,984.60
  6. Step 6: Final answer
    x = 466,511.40

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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.