Home / 743,989.47-1,026,785.75-421,664.97

Finding the Fourth Proportional to 743,989.47, 1,026,785.75 and 421,664.97

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Solution

The fourth proportional to 743,989.47, 1,026,785.75 and 421,664.97 is: 581,943.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,989.47 : 1,026,785.75 = 421,664.97 : x
  2. Step 2: Convert to fraction form
    743,989.47/1,026,785.75 = 421,664.97/x
  3. Step 3: Cross multiply
    743,989.47x = 1,026,785.75 × 421,664.97
  4. Step 4: Simplify right side
    743,989.47x = 432,959,582,470.18
  5. Step 5: Solve for x
    x = 432,959,582,470.18/743,989.47
  6. Step 6: Final answer
    x = 581,943.16

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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.