Home / 606,890.10-911,319.30-439,584.60

Finding the Fourth Proportional to 606,890.10, 911,319.30 and 439,584.60

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Solution

The fourth proportional to 606,890.10, 911,319.30 and 439,584.60 is: 660,089.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,890.10 : 911,319.30 = 439,584.60 : x
  2. Step 2: Convert to fraction form
    606,890.10/911,319.30 = 439,584.60/x
  3. Step 3: Cross multiply
    606,890.10x = 911,319.30 × 439,584.60
  4. Step 4: Simplify right side
    606,890.10x = 400,601,929,962.78
  5. Step 5: Solve for x
    x = 400,601,929,962.78/606,890.10
  6. Step 6: Final answer
    x = 660,089.74

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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.