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Finding the Fourth Proportional to 646,988.40, 970,482.60 and 226,220.40

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Solution

The fourth proportional to 646,988.40, 970,482.60 and 226,220.40 is: 339,330.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,988.40 : 970,482.60 = 226,220.40 : x
  2. Step 2: Convert to fraction form
    646,988.40/970,482.60 = 226,220.40/x
  3. Step 3: Cross multiply
    646,988.40x = 970,482.60 × 226,220.40
  4. Step 4: Simplify right side
    646,988.40x = 219,542,961,965.04
  5. Step 5: Solve for x
    x = 219,542,961,965.04/646,988.40
  6. Step 6: Final answer
    x = 339,330.60

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Half scale
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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.