Home / 857,576.87-1,284,650.28-515,831.54

Finding the Fourth Proportional to 857,576.87, 1,284,650.28 and 515,831.54

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Solution

The fourth proportional to 857,576.87, 1,284,650.28 and 515,831.54 is: 772,715.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,576.87 : 1,284,650.28 = 515,831.54 : x
  2. Step 2: Convert to fraction form
    857,576.87/1,284,650.28 = 515,831.54/x
  3. Step 3: Cross multiply
    857,576.87x = 1,284,650.28 × 515,831.54
  4. Step 4: Simplify right side
    857,576.87x = 662,663,133,096.74
  5. Step 5: Solve for x
    x = 662,663,133,096.74/857,576.87
  6. Step 6: Final answer
    x = 772,715.73

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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.