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Finding the Fourth Proportional to 646,734.40, 970,101.60 and 489,270.40

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Solution

The fourth proportional to 646,734.40, 970,101.60 and 489,270.40 is: 733,905.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,734.40 : 970,101.60 = 489,270.40 : x
  2. Step 2: Convert to fraction form
    646,734.40/970,101.60 = 489,270.40/x
  3. Step 3: Cross multiply
    646,734.40x = 970,101.60 × 489,270.40
  4. Step 4: Simplify right side
    646,734.40x = 474,641,997,872.64
  5. Step 5: Solve for x
    x = 474,641,997,872.64/646,734.40
  6. Step 6: Final answer
    x = 733,905.60

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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.