Home / 547,778.10-821,667.15-539,904.90

Finding the Fourth Proportional to 547,778.10, 821,667.15 and 539,904.90

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Solution

The fourth proportional to 547,778.10, 821,667.15 and 539,904.90 is: 809,857.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,778.10 : 821,667.15 = 539,904.90 : x
  2. Step 2: Convert to fraction form
    547,778.10/821,667.15 = 539,904.90/x
  3. Step 3: Cross multiply
    547,778.10x = 821,667.15 × 539,904.90
  4. Step 4: Simplify right side
    547,778.10x = 443,622,120,454.04
  5. Step 5: Solve for x
    x = 443,622,120,454.04/547,778.10
  6. Step 6: Final answer
    x = 809,857.35

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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.