Home / 1,125,243.78-1,687,865.73-272,315.50

Finding the Fourth Proportional to 1,125,243.78, 1,687,865.73 and 272,315.50

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Solution

The fourth proportional to 1,125,243.78, 1,687,865.73 and 272,315.50 is: 408,473.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,125,243.78 : 1,687,865.73 = 272,315.50 : x
  2. Step 2: Convert to fraction form
    1,125,243.78/1,687,865.73 = 272,315.50/x
  3. Step 3: Cross multiply
    1,125,243.78x = 1,687,865.73 × 272,315.50
  4. Step 4: Simplify right side
    1,125,243.78x = 459,632,000,197.82
  5. Step 5: Solve for x
    x = 459,632,000,197.82/1,125,243.78
  6. Step 6: Final answer
    x = 408,473.26

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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.