Home / 806,442.31-1,112,890.32-438,922.08

Finding the Fourth Proportional to 806,442.31, 1,112,890.32 and 438,922.08

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Solution

The fourth proportional to 806,442.31, 1,112,890.32 and 438,922.08 is: 605,712.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,442.31 : 1,112,890.32 = 438,922.08 : x
  2. Step 2: Convert to fraction form
    806,442.31/1,112,890.32 = 438,922.08/x
  3. Step 3: Cross multiply
    806,442.31x = 1,112,890.32 × 438,922.08
  4. Step 4: Simplify right side
    806,442.31x = 488,472,133,223.81
  5. Step 5: Solve for x
    x = 488,472,133,223.81/806,442.31
  6. Step 6: Final answer
    x = 605,712.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.