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Finding the Fourth Proportional to 547,787.60, 821,681.40 and 455,627.60

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Solution

The fourth proportional to 547,787.60, 821,681.40 and 455,627.60 is: 683,441.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,787.60 : 821,681.40 = 455,627.60 : x
  2. Step 2: Convert to fraction form
    547,787.60/821,681.40 = 455,627.60/x
  3. Step 3: Cross multiply
    547,787.60x = 821,681.40 × 455,627.60
  4. Step 4: Simplify right side
    547,787.60x = 374,380,724,246.64
  5. Step 5: Solve for x
    x = 374,380,724,246.64/547,787.60
  6. Step 6: Final answer
    x = 683,441.40

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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.