Home / 853,812.47-1,281,585.31-427,653.65

Finding the Fourth Proportional to 853,812.47, 1,281,585.31 and 427,653.65

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Solution

The fourth proportional to 853,812.47, 1,281,585.31 and 427,653.65 is: 641,914.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,812.47 : 1,281,585.31 = 427,653.65 : x
  2. Step 2: Convert to fraction form
    853,812.47/1,281,585.31 = 427,653.65/x
  3. Step 3: Cross multiply
    853,812.47x = 1,281,585.31 × 427,653.65
  4. Step 4: Simplify right side
    853,812.47x = 548,074,635,607.88
  5. Step 5: Solve for x
    x = 548,074,635,607.88/853,812.47
  6. Step 6: Final answer
    x = 641,914.54

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Double scale
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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.