Home / 638,664.54-958,137.45-189,420.54

Finding the Fourth Proportional to 638,664.54, 958,137.45 and 189,420.54

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Solution

The fourth proportional to 638,664.54, 958,137.45 and 189,420.54 is: 284,172.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,664.54 : 958,137.45 = 189,420.54 : x
  2. Step 2: Convert to fraction form
    638,664.54/958,137.45 = 189,420.54/x
  3. Step 3: Cross multiply
    638,664.54x = 958,137.45 × 189,420.54
  4. Step 4: Simplify right side
    638,664.54x = 181,490,913,173.22
  5. Step 5: Solve for x
    x = 181,490,913,173.22/638,664.54
  6. Step 6: Final answer
    x = 284,172.52

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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.