Home / 891,679.40-1,230,517.46-509,714.44

Finding the Fourth Proportional to 891,679.40, 1,230,517.46 and 509,714.44

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Solution

The fourth proportional to 891,679.40, 1,230,517.46 and 509,714.44 is: 703,405.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,679.40 : 1,230,517.46 = 509,714.44 : x
  2. Step 2: Convert to fraction form
    891,679.40/1,230,517.46 = 509,714.44/x
  3. Step 3: Cross multiply
    891,679.40x = 1,230,517.46 × 509,714.44
  4. Step 4: Simplify right side
    891,679.40x = 627,212,518,034.12
  5. Step 5: Solve for x
    x = 627,212,518,034.12/891,679.40
  6. Step 6: Final answer
    x = 703,405.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.