Home / 646,721.60-970,228.20-197,463.20

Finding the Fourth Proportional to 646,721.60, 970,228.20 and 197,463.20

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Solution

The fourth proportional to 646,721.60, 970,228.20 and 197,463.20 is: 296,239.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,721.60 : 970,228.20 = 197,463.20 : x
  2. Step 2: Convert to fraction form
    646,721.60/970,228.20 = 197,463.20/x
  3. Step 3: Cross multiply
    646,721.60x = 970,228.20 × 197,463.20
  4. Step 4: Simplify right side
    646,721.60x = 191,584,365,102.24
  5. Step 5: Solve for x
    x = 191,584,365,102.24/646,721.60
  6. Step 6: Final answer
    x = 296,239.32

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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.