Home / 830,998.80-1,246,498.20-515,811.60

Finding the Fourth Proportional to 830,998.80, 1,246,498.20 and 515,811.60

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Solution

The fourth proportional to 830,998.80, 1,246,498.20 and 515,811.60 is: 773,717.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,998.80 : 1,246,498.20 = 515,811.60 : x
  2. Step 2: Convert to fraction form
    830,998.80/1,246,498.20 = 515,811.60/x
  3. Step 3: Cross multiply
    830,998.80x = 1,246,498.20 × 515,811.60
  4. Step 4: Simplify right side
    830,998.80x = 642,958,230,939.12
  5. Step 5: Solve for x
    x = 642,958,230,939.12/830,998.80
  6. Step 6: Final answer
    x = 773,717.40

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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.