Home / 1,273,697.28-1,908,971.28-642,791.52

Finding the Fourth Proportional to 1,273,697.28, 1,908,971.28 and 642,791.52

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Solution

The fourth proportional to 1,273,697.28, 1,908,971.28 and 642,791.52 is: 963,392.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,273,697.28 : 1,908,971.28 = 642,791.52 : x
  2. Step 2: Convert to fraction form
    1,273,697.28/1,908,971.28 = 642,791.52/x
  3. Step 3: Cross multiply
    1,273,697.28x = 1,908,971.28 × 642,791.52
  4. Step 4: Simplify right side
    1,273,697.28x = 1,227,070,550,707.55
  5. Step 5: Solve for x
    x = 1,227,070,550,707.55/1,273,697.28
  6. Step 6: Final answer
    x = 963,392.61

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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.