Home / 926,815.20-1,390,222.80-394,353.60

Finding the Fourth Proportional to 926,815.20, 1,390,222.80 and 394,353.60

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Solution

The fourth proportional to 926,815.20, 1,390,222.80 and 394,353.60 is: 591,530.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,815.20 : 1,390,222.80 = 394,353.60 : x
  2. Step 2: Convert to fraction form
    926,815.20/1,390,222.80 = 394,353.60/x
  3. Step 3: Cross multiply
    926,815.20x = 1,390,222.80 × 394,353.60
  4. Step 4: Simplify right side
    926,815.20x = 548,239,365,982.08
  5. Step 5: Solve for x
    x = 548,239,365,982.08/926,815.20
  6. Step 6: Final answer
    x = 591,530.40

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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.