Home / 818,793.18-1,129,919.65-456,209.28

Finding the Fourth Proportional to 818,793.18, 1,129,919.65 and 456,209.28

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Solution

The fourth proportional to 818,793.18, 1,129,919.65 and 456,209.28 is: 629,560.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,793.18 : 1,129,919.65 = 456,209.28 : x
  2. Step 2: Convert to fraction form
    818,793.18/1,129,919.65 = 456,209.28/x
  3. Step 3: Cross multiply
    818,793.18x = 1,129,919.65 × 456,209.28
  4. Step 4: Simplify right side
    818,793.18x = 515,479,828,843.83
  5. Step 5: Solve for x
    x = 515,479,828,843.83/818,793.18
  6. Step 6: Final answer
    x = 629,560.48

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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.