Home / 993,815.40-1,489,994.10-394,480.20

Finding the Fourth Proportional to 993,815.40, 1,489,994.10 and 394,480.20

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Solution

The fourth proportional to 993,815.40, 1,489,994.10 and 394,480.20 is: 591,430.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,815.40 : 1,489,994.10 = 394,480.20 : x
  2. Step 2: Convert to fraction form
    993,815.40/1,489,994.10 = 394,480.20/x
  3. Step 3: Cross multiply
    993,815.40x = 1,489,994.10 × 394,480.20
  4. Step 4: Simplify right side
    993,815.40x = 587,773,170,566.82
  5. Step 5: Solve for x
    x = 587,773,170,566.82/993,815.40
  6. Step 6: Final answer
    x = 591,430.93

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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.