Home / 765,334.12-1,055,807.71-493,489.34

Finding the Fourth Proportional to 765,334.12, 1,055,807.71 and 493,489.34

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Solution

The fourth proportional to 765,334.12, 1,055,807.71 and 493,489.34 is: 680,787.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,334.12 : 1,055,807.71 = 493,489.34 : x
  2. Step 2: Convert to fraction form
    765,334.12/1,055,807.71 = 493,489.34/x
  3. Step 3: Cross multiply
    765,334.12x = 1,055,807.71 × 493,489.34
  4. Step 4: Simplify right side
    765,334.12x = 521,029,849,974.81
  5. Step 5: Solve for x
    x = 521,029,849,974.81/765,334.12
  6. Step 6: Final answer
    x = 680,787.43

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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.