Home / 862,685.60-1,293,721.20-389,597.60

Finding the Fourth Proportional to 862,685.60, 1,293,721.20 and 389,597.60

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Solution

The fourth proportional to 862,685.60, 1,293,721.20 and 389,597.60 is: 584,257.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,685.60 : 1,293,721.20 = 389,597.60 : x
  2. Step 2: Convert to fraction form
    862,685.60/1,293,721.20 = 389,597.60/x
  3. Step 3: Cross multiply
    862,685.60x = 1,293,721.20 × 389,597.60
  4. Step 4: Simplify right side
    862,685.60x = 504,030,674,589.12
  5. Step 5: Solve for x
    x = 504,030,674,589.12/862,685.60
  6. Step 6: Final answer
    x = 584,257.67

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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.