Home / 811,333.80-1,217,999.10-511,813.80

Finding the Fourth Proportional to 811,333.80, 1,217,999.10 and 511,813.80

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Solution

The fourth proportional to 811,333.80, 1,217,999.10 and 511,813.80 is: 768,350.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,333.80 : 1,217,999.10 = 511,813.80 : x
  2. Step 2: Convert to fraction form
    811,333.80/1,217,999.10 = 511,813.80/x
  3. Step 3: Cross multiply
    811,333.80x = 1,217,999.10 × 511,813.80
  4. Step 4: Simplify right side
    811,333.80x = 623,388,747,767.58
  5. Step 5: Solve for x
    x = 623,388,747,767.58/811,333.80
  6. Step 6: Final answer
    x = 768,350.52

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1.5x scale

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.