Home / 827,145.70-1,240,948.95-406,435.30

Finding the Fourth Proportional to 827,145.70, 1,240,948.95 and 406,435.30

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Solution

The fourth proportional to 827,145.70, 1,240,948.95 and 406,435.30 is: 609,766.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,145.70 : 1,240,948.95 = 406,435.30 : x
  2. Step 2: Convert to fraction form
    827,145.70/1,240,948.95 = 406,435.30/x
  3. Step 3: Cross multiply
    827,145.70x = 1,240,948.95 × 406,435.30
  4. Step 4: Simplify right side
    827,145.70x = 504,365,458,777.94
  5. Step 5: Solve for x
    x = 504,365,458,777.94/827,145.70
  6. Step 6: Final answer
    x = 609,766.16

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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.