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Finding the Fourth Proportional to 646,744.40, 970,116.60 and 197,464.40

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Solution

The fourth proportional to 646,744.40, 970,116.60 and 197,464.40 is: 296,196.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,744.40 : 970,116.60 = 197,464.40 : x
  2. Step 2: Convert to fraction form
    646,744.40/970,116.60 = 197,464.40/x
  3. Step 3: Cross multiply
    646,744.40x = 970,116.60 × 197,464.40
  4. Step 4: Simplify right side
    646,744.40x = 191,563,492,349.04
  5. Step 5: Solve for x
    x = 191,563,492,349.04/646,744.40
  6. Step 6: Final answer
    x = 296,196.60

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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.