Home / 820,212.20-1,230,491.10-346,653.80

Finding the Fourth Proportional to 820,212.20, 1,230,491.10 and 346,653.80

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Solution

The fourth proportional to 820,212.20, 1,230,491.10 and 346,653.80 is: 520,053.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,212.20 : 1,230,491.10 = 346,653.80 : x
  2. Step 2: Convert to fraction form
    820,212.20/1,230,491.10 = 346,653.80/x
  3. Step 3: Cross multiply
    820,212.20x = 1,230,491.10 × 346,653.80
  4. Step 4: Simplify right side
    820,212.20x = 426,554,415,681.18
  5. Step 5: Solve for x
    x = 426,554,415,681.18/820,212.20
  6. Step 6: Final answer
    x = 520,053.73

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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.