Home / 778,958.06-1,074,965.37-421,262.06

Finding the Fourth Proportional to 778,958.06, 1,074,965.37 and 421,262.06

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Solution

The fourth proportional to 778,958.06, 1,074,965.37 and 421,262.06 is: 581,343.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,958.06 : 1,074,965.37 = 421,262.06 : x
  2. Step 2: Convert to fraction form
    778,958.06/1,074,965.37 = 421,262.06/x
  3. Step 3: Cross multiply
    778,958.06x = 1,074,965.37 × 421,262.06
  4. Step 4: Simplify right side
    778,958.06x = 452,842,128,882.28
  5. Step 5: Solve for x
    x = 452,842,128,882.28/778,958.06
  6. Step 6: Final answer
    x = 581,343.40

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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.