Home / 1,287,384.40-1,933,150.20-972,197.20

Finding the Fourth Proportional to 1,287,384.40, 1,933,150.20 and 972,197.20

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Solution

The fourth proportional to 1,287,384.40, 1,933,150.20 and 972,197.20 is: 1,459,861.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,384.40 : 1,933,150.20 = 972,197.20 : x
  2. Step 2: Convert to fraction form
    1,287,384.40/1,933,150.20 = 972,197.20/x
  3. Step 3: Cross multiply
    1,287,384.40x = 1,933,150.20 × 972,197.20
  4. Step 4: Simplify right side
    1,287,384.40x = 1,879,403,211,619.44
  5. Step 5: Solve for x
    x = 1,879,403,211,619.44/1,287,384.40
  6. Step 6: Final answer
    x = 1,459,861.73

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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.