Home / 621,001.20-931,415.40-200,319.60

Finding the Fourth Proportional to 621,001.20, 931,415.40 and 200,319.60

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Solution

The fourth proportional to 621,001.20, 931,415.40 and 200,319.60 is: 300,451.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,001.20 : 931,415.40 = 200,319.60 : x
  2. Step 2: Convert to fraction form
    621,001.20/931,415.40 = 200,319.60/x
  3. Step 3: Cross multiply
    621,001.20x = 931,415.40 × 200,319.60
  4. Step 4: Simplify right side
    621,001.20x = 186,580,760,361.84
  5. Step 5: Solve for x
    x = 186,580,760,361.84/621,001.20
  6. Step 6: Final answer
    x = 300,451.53

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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.