Home / 411,682.32-618,090.18-209,415.36

Finding the Fourth Proportional to 411,682.32, 618,090.18 and 209,415.36

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Solution

The fourth proportional to 411,682.32, 618,090.18 and 209,415.36 is: 314,411.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,682.32 : 618,090.18 = 209,415.36 : x
  2. Step 2: Convert to fraction form
    411,682.32/618,090.18 = 209,415.36/x
  3. Step 3: Cross multiply
    411,682.32x = 618,090.18 × 209,415.36
  4. Step 4: Simplify right side
    411,682.32x = 129,437,577,557.17
  5. Step 5: Solve for x
    x = 129,437,577,557.17/411,682.32
  6. Step 6: Final answer
    x = 314,411.31

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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.