Home / 857,576.43-1,284,649.56-515,831.16

Finding the Fourth Proportional to 857,576.43, 1,284,649.56 and 515,831.16

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Solution

The fourth proportional to 857,576.43, 1,284,649.56 and 515,831.16 is: 772,715.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,576.43 : 1,284,649.56 = 515,831.16 : x
  2. Step 2: Convert to fraction form
    857,576.43/1,284,649.56 = 515,831.16/x
  3. Step 3: Cross multiply
    857,576.43x = 1,284,649.56 × 515,831.16
  4. Step 4: Simplify right side
    857,576.43x = 662,662,272,728.29
  5. Step 5: Solve for x
    x = 662,662,272,728.29/857,576.43
  6. Step 6: Final answer
    x = 772,715.12

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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.