Home / 621,109.24-857,396.82-427,788.16

Finding the Fourth Proportional to 621,109.24, 857,396.82 and 427,788.16

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Solution

The fourth proportional to 621,109.24, 857,396.82 and 427,788.16 is: 590,530.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,109.24 : 857,396.82 = 427,788.16 : x
  2. Step 2: Convert to fraction form
    621,109.24/857,396.82 = 427,788.16/x
  3. Step 3: Cross multiply
    621,109.24x = 857,396.82 × 427,788.16
  4. Step 4: Simplify right side
    621,109.24x = 366,784,208,017.65
  5. Step 5: Solve for x
    x = 366,784,208,017.65/621,109.24
  6. Step 6: Final answer
    x = 590,530.92

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.