Home / 926,820.60-1,390,230.90-394,207.80

Finding the Fourth Proportional to 926,820.60, 1,390,230.90 and 394,207.80

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Solution

The fourth proportional to 926,820.60, 1,390,230.90 and 394,207.80 is: 591,311.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,820.60 : 1,390,230.90 = 394,207.80 : x
  2. Step 2: Convert to fraction form
    926,820.60/1,390,230.90 = 394,207.80/x
  3. Step 3: Cross multiply
    926,820.60x = 1,390,230.90 × 394,207.80
  4. Step 4: Simplify right side
    926,820.60x = 548,039,864,581.02
  5. Step 5: Solve for x
    x = 548,039,864,581.02/926,820.60
  6. Step 6: Final answer
    x = 591,311.70

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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.