Home / 830,416.80-1,245,625.20-664,528.80

Finding the Fourth Proportional to 830,416.80, 1,245,625.20 and 664,528.80

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Solution

The fourth proportional to 830,416.80, 1,245,625.20 and 664,528.80 is: 996,793.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,416.80 : 1,245,625.20 = 664,528.80 : x
  2. Step 2: Convert to fraction form
    830,416.80/1,245,625.20 = 664,528.80/x
  3. Step 3: Cross multiply
    830,416.80x = 1,245,625.20 × 664,528.80
  4. Step 4: Simplify right side
    830,416.80x = 827,753,819,405.76
  5. Step 5: Solve for x
    x = 827,753,819,405.76/830,416.80
  6. Step 6: Final answer
    x = 996,793.20

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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.