Home / 620,743.20-931,028.40-200,061.60

Finding the Fourth Proportional to 620,743.20, 931,028.40 and 200,061.60

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Solution

The fourth proportional to 620,743.20, 931,028.40 and 200,061.60 is: 300,064.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,743.20 : 931,028.40 = 200,061.60 : x
  2. Step 2: Convert to fraction form
    620,743.20/931,028.40 = 200,061.60/x
  3. Step 3: Cross multiply
    620,743.20x = 931,028.40 × 200,061.60
  4. Step 4: Simplify right side
    620,743.20x = 186,263,031,349.44
  5. Step 5: Solve for x
    x = 186,263,031,349.44/620,743.20
  6. Step 6: Final answer
    x = 300,064.55

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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.