Home / 547,746.40-821,619.60-311,550.40

Finding the Fourth Proportional to 547,746.40, 821,619.60 and 311,550.40

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Solution

The fourth proportional to 547,746.40, 821,619.60 and 311,550.40 is: 467,325.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,746.40 : 821,619.60 = 311,550.40 : x
  2. Step 2: Convert to fraction form
    547,746.40/821,619.60 = 311,550.40/x
  3. Step 3: Cross multiply
    547,746.40x = 821,619.60 × 311,550.40
  4. Step 4: Simplify right side
    547,746.40x = 255,975,915,027.84
  5. Step 5: Solve for x
    x = 255,975,915,027.84/547,746.40
  6. Step 6: Final answer
    x = 467,325.60

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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.