Home / 765,962.87-1,057,009.68-421,796.07

Finding the Fourth Proportional to 765,962.87, 1,057,009.68 and 421,796.07

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Solution

The fourth proportional to 765,962.87, 1,057,009.68 and 421,796.07 is: 582,068.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,962.87 : 1,057,009.68 = 421,796.07 : x
  2. Step 2: Convert to fraction form
    765,962.87/1,057,009.68 = 421,796.07/x
  3. Step 3: Cross multiply
    765,962.87x = 1,057,009.68 × 421,796.07
  4. Step 4: Simplify right side
    765,962.87x = 445,842,528,975.96
  5. Step 5: Solve for x
    x = 445,842,528,975.96/765,962.87
  6. Step 6: Final answer
    x = 582,068.07

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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.