Home / 606,821.10-911,215.80-439,515.60

Finding the Fourth Proportional to 606,821.10, 911,215.80 and 439,515.60

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Solution

The fourth proportional to 606,821.10, 911,215.80 and 439,515.60 is: 659,986.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,821.10 : 911,215.80 = 439,515.60 : x
  2. Step 2: Convert to fraction form
    606,821.10/911,215.80 = 439,515.60/x
  3. Step 3: Cross multiply
    606,821.10x = 911,215.80 × 439,515.60
  4. Step 4: Simplify right side
    606,821.10x = 400,493,559,066.48
  5. Step 5: Solve for x
    x = 400,493,559,066.48/606,821.10
  6. Step 6: Final answer
    x = 659,986.21

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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.