Home / 890,812.20-1,336,218.30-839,490.60

Finding the Fourth Proportional to 890,812.20, 1,336,218.30 and 839,490.60

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Solution

The fourth proportional to 890,812.20, 1,336,218.30 and 839,490.60 is: 1,259,235.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,812.20 : 1,336,218.30 = 839,490.60 : x
  2. Step 2: Convert to fraction form
    890,812.20/1,336,218.30 = 839,490.60/x
  3. Step 3: Cross multiply
    890,812.20x = 1,336,218.30 × 839,490.60
  4. Step 4: Simplify right side
    890,812.20x = 1,121,742,702,397.98
  5. Step 5: Solve for x
    x = 1,121,742,702,397.98/890,812.20
  6. Step 6: Final answer
    x = 1,259,235.90

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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.