Home / 808,039.31-1,209,065.02-647,628.71

Finding the Fourth Proportional to 808,039.31, 1,209,065.02 and 647,628.71

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Solution

The fourth proportional to 808,039.31, 1,209,065.02 and 647,628.71 is: 969,043.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,039.31 : 1,209,065.02 = 647,628.71 : x
  2. Step 2: Convert to fraction form
    808,039.31/1,209,065.02 = 647,628.71/x
  3. Step 3: Cross multiply
    808,039.31x = 1,209,065.02 × 647,628.71
  4. Step 4: Simplify right side
    808,039.31x = 783,025,211,544.33
  5. Step 5: Solve for x
    x = 783,025,211,544.33/808,039.31
  6. Step 6: Final answer
    x = 969,043.47

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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.