Home / 445,208.13-666,215.87-385,442.16

Finding the Fourth Proportional to 445,208.13, 666,215.87 and 385,442.16

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Solution

The fourth proportional to 445,208.13, 666,215.87 and 385,442.16 is: 576,781.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,208.13 : 666,215.87 = 385,442.16 : x
  2. Step 2: Convert to fraction form
    445,208.13/666,215.87 = 385,442.16/x
  3. Step 3: Cross multiply
    445,208.13x = 666,215.87 × 385,442.16
  4. Step 4: Simplify right side
    445,208.13x = 256,787,682,031.87
  5. Step 5: Solve for x
    x = 256,787,682,031.87/445,208.13
  6. Step 6: Final answer
    x = 576,781.21

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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.