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Finding the Fourth Proportional to 585,906.40, 878,859.60 and 142,674.40

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Solution

The fourth proportional to 585,906.40, 878,859.60 and 142,674.40 is: 214,011.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,906.40 : 878,859.60 = 142,674.40 : x
  2. Step 2: Convert to fraction form
    585,906.40/878,859.60 = 142,674.40/x
  3. Step 3: Cross multiply
    585,906.40x = 878,859.60 × 142,674.40
  4. Step 4: Simplify right side
    585,906.40x = 125,390,766,114.24
  5. Step 5: Solve for x
    x = 125,390,766,114.24/585,906.40
  6. Step 6: Final answer
    x = 214,011.60

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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.