Home / 765,891.39-1,056,937.98-421,759.35

Finding the Fourth Proportional to 765,891.39, 1,056,937.98 and 421,759.35

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Solution

The fourth proportional to 765,891.39, 1,056,937.98 and 421,759.35 is: 582,032.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,891.39 : 1,056,937.98 = 421,759.35 : x
  2. Step 2: Convert to fraction form
    765,891.39/1,056,937.98 = 421,759.35/x
  3. Step 3: Cross multiply
    765,891.39x = 1,056,937.98 × 421,759.35
  4. Step 4: Simplify right side
    765,891.39x = 445,773,475,435.11
  5. Step 5: Solve for x
    x = 445,773,475,435.11/765,891.39
  6. Step 6: Final answer
    x = 582,032.23

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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.