Home / 779,614.69-1,075,868.27-421,918.69

Finding the Fourth Proportional to 779,614.69, 1,075,868.27 and 421,918.69

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Solution

The fourth proportional to 779,614.69, 1,075,868.27 and 421,918.69 is: 582,247.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,614.69 : 1,075,868.27 = 421,918.69 : x
  2. Step 2: Convert to fraction form
    779,614.69/1,075,868.27 = 421,918.69/x
  3. Step 3: Cross multiply
    779,614.69x = 1,075,868.27 × 421,918.69
  4. Step 4: Simplify right side
    779,614.69x = 453,928,929,456.09
  5. Step 5: Solve for x
    x = 453,928,929,456.09/779,614.69
  6. Step 6: Final answer
    x = 582,247.79

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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.