Home / 1,276,021.20-1,913,110.20-715,227.60

Finding the Fourth Proportional to 1,276,021.20, 1,913,110.20 and 715,227.60

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Solution

The fourth proportional to 1,276,021.20, 1,913,110.20 and 715,227.60 is: 1,072,324.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,021.20 : 1,913,110.20 = 715,227.60 : x
  2. Step 2: Convert to fraction form
    1,276,021.20/1,913,110.20 = 715,227.60/x
  3. Step 3: Cross multiply
    1,276,021.20x = 1,913,110.20 × 715,227.60
  4. Step 4: Simplify right side
    1,276,021.20x = 1,368,309,216,881.52
  5. Step 5: Solve for x
    x = 1,368,309,216,881.52/1,276,021.20
  6. Step 6: Final answer
    x = 1,072,324.83

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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.