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Finding the Fourth Proportional to 605,149.60, 907,724.40 and 310,237.60

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Solution

The fourth proportional to 605,149.60, 907,724.40 and 310,237.60 is: 465,356.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,149.60 : 907,724.40 = 310,237.60 : x
  2. Step 2: Convert to fraction form
    605,149.60/907,724.40 = 310,237.60/x
  3. Step 3: Cross multiply
    605,149.60x = 907,724.40 × 310,237.60
  4. Step 4: Simplify right side
    605,149.60x = 281,610,239,317.44
  5. Step 5: Solve for x
    x = 281,610,239,317.44/605,149.60
  6. Step 6: Final answer
    x = 465,356.40

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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.