Home / 436,922.80-656,075.40-319,418.80

Finding the Fourth Proportional to 436,922.80, 656,075.40 and 319,418.80

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Solution

The fourth proportional to 436,922.80, 656,075.40 and 319,418.80 is: 479,633.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,922.80 : 656,075.40 = 319,418.80 : x
  2. Step 2: Convert to fraction form
    436,922.80/656,075.40 = 319,418.80/x
  3. Step 3: Cross multiply
    436,922.80x = 656,075.40 × 319,418.80
  4. Step 4: Simplify right side
    436,922.80x = 209,562,816,977.52
  5. Step 5: Solve for x
    x = 209,562,816,977.52/436,922.80
  6. Step 6: Final answer
    x = 479,633.51

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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.