Home / 1,328,035.78-1,992,071.49-417,188.53

Finding the Fourth Proportional to 1,328,035.78, 1,992,071.49 and 417,188.53

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Solution

The fourth proportional to 1,328,035.78, 1,992,071.49 and 417,188.53 is: 625,788.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,035.78 : 1,992,071.49 = 417,188.53 : x
  2. Step 2: Convert to fraction form
    1,328,035.78/1,992,071.49 = 417,188.53/x
  3. Step 3: Cross multiply
    1,328,035.78x = 1,992,071.49 × 417,188.53
  4. Step 4: Simplify right side
    1,328,035.78x = 831,069,376,568.01
  5. Step 5: Solve for x
    x = 831,069,376,568.01/1,328,035.78
  6. Step 6: Final answer
    x = 625,788.39

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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.