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Finding the Fourth Proportional to 613,693.60, 920,540.40 and 170,461.60

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Solution

The fourth proportional to 613,693.60, 920,540.40 and 170,461.60 is: 255,692.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,693.60 : 920,540.40 = 170,461.60 : x
  2. Step 2: Convert to fraction form
    613,693.60/920,540.40 = 170,461.60/x
  3. Step 3: Cross multiply
    613,693.60x = 920,540.40 × 170,461.60
  4. Step 4: Simplify right side
    613,693.60x = 156,916,789,448.64
  5. Step 5: Solve for x
    x = 156,916,789,448.64/613,693.60
  6. Step 6: Final answer
    x = 255,692.40

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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.