Home / 779,389-1,075,556.82-421,693

Finding the Fourth Proportional to 779,389, 1,075,556.82 and 421,693

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Solution

The fourth proportional to 779,389, 1,075,556.82 and 421,693 is: 581,936.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,389 : 1,075,556.82 = 421,693 : x
  2. Step 2: Convert to fraction form
    779,389/1,075,556.82 = 421,693/x
  3. Step 3: Cross multiply
    779,389x = 1,075,556.82 × 421,693
  4. Step 4: Simplify right side
    779,389x = 453,554,782,096.26
  5. Step 5: Solve for x
    x = 453,554,782,096.26/779,389
  6. Step 6: Final answer
    x = 581,936.34

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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.