Home / 830,665.80-1,245,998.70-511,801.20

Finding the Fourth Proportional to 830,665.80, 1,245,998.70 and 511,801.20

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Solution

The fourth proportional to 830,665.80, 1,245,998.70 and 511,801.20 is: 767,701.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,665.80 : 1,245,998.70 = 511,801.20 : x
  2. Step 2: Convert to fraction form
    830,665.80/1,245,998.70 = 511,801.20/x
  3. Step 3: Cross multiply
    830,665.80x = 1,245,998.70 × 511,801.20
  4. Step 4: Simplify right side
    830,665.80x = 637,703,629,858.44
  5. Step 5: Solve for x
    x = 637,703,629,858.44/830,665.80
  6. Step 6: Final answer
    x = 767,701.80

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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.