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Finding the Fourth Proportional to 432,862.60, 649,293.90 and 313,976.20

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Solution

The fourth proportional to 432,862.60, 649,293.90 and 313,976.20 is: 470,964.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,862.60 : 649,293.90 = 313,976.20 : x
  2. Step 2: Convert to fraction form
    432,862.60/649,293.90 = 313,976.20/x
  3. Step 3: Cross multiply
    432,862.60x = 649,293.90 × 313,976.20
  4. Step 4: Simplify right side
    432,862.60x = 203,862,831,405.18
  5. Step 5: Solve for x
    x = 203,862,831,405.18/432,862.60
  6. Step 6: Final answer
    x = 470,964.30

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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.