Home / 864,072.80-1,296,109.20-685,613.60

Finding the Fourth Proportional to 864,072.80, 1,296,109.20 and 685,613.60

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Solution

The fourth proportional to 864,072.80, 1,296,109.20 and 685,613.60 is: 1,028,420.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,072.80 : 1,296,109.20 = 685,613.60 : x
  2. Step 2: Convert to fraction form
    864,072.80/1,296,109.20 = 685,613.60/x
  3. Step 3: Cross multiply
    864,072.80x = 1,296,109.20 × 685,613.60
  4. Step 4: Simplify right side
    864,072.80x = 888,630,094,605.12
  5. Step 5: Solve for x
    x = 888,630,094,605.12/864,072.80
  6. Step 6: Final answer
    x = 1,028,420.40

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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.