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Finding the Fourth Proportional to 890,654.60, 1,336,817.10 and 470,232.20

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Solution

The fourth proportional to 890,654.60, 1,336,817.10 and 470,232.20 is: 705,789.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,654.60 : 1,336,817.10 = 470,232.20 : x
  2. Step 2: Convert to fraction form
    890,654.60/1,336,817.10 = 470,232.20/x
  3. Step 3: Cross multiply
    890,654.60x = 1,336,817.10 × 470,232.20
  4. Step 4: Simplify right side
    890,654.60x = 628,614,445,930.62
  5. Step 5: Solve for x
    x = 628,614,445,930.62/890,654.60
  6. Step 6: Final answer
    x = 705,789.25

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Double scale
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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.