Home / 820,075.20-1,229,743.68-346,516.80

Finding the Fourth Proportional to 820,075.20, 1,229,743.68 and 346,516.80

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Solution

The fourth proportional to 820,075.20, 1,229,743.68 and 346,516.80 is: 519,619.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,075.20 : 1,229,743.68 = 346,516.80 : x
  2. Step 2: Convert to fraction form
    820,075.20/1,229,743.68 = 346,516.80/x
  3. Step 3: Cross multiply
    820,075.20x = 1,229,743.68 × 346,516.80
  4. Step 4: Simplify right side
    820,075.20x = 426,126,844,813.82
  5. Step 5: Solve for x
    x = 426,126,844,813.82/820,075.20
  6. Step 6: Final answer
    x = 519,619.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.