Home / 1,092,811.20-1,639,216.80-620,419.20

Finding the Fourth Proportional to 1,092,811.20, 1,639,216.80 and 620,419.20

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Solution

The fourth proportional to 1,092,811.20, 1,639,216.80 and 620,419.20 is: 930,628.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,092,811.20 : 1,639,216.80 = 620,419.20 : x
  2. Step 2: Convert to fraction form
    1,092,811.20/1,639,216.80 = 620,419.20/x
  3. Step 3: Cross multiply
    1,092,811.20x = 1,639,216.80 × 620,419.20
  4. Step 4: Simplify right side
    1,092,811.20x = 1,017,001,575,682.56
  5. Step 5: Solve for x
    x = 1,017,001,575,682.56/1,092,811.20
  6. Step 6: Final answer
    x = 930,628.80

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Double scale
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Similar ratio
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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.