Home / 1,688,530.11-2,533,268.67-678,361.44

Finding the Fourth Proportional to 1,688,530.11, 2,533,268.67 and 678,361.44

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Solution

The fourth proportional to 1,688,530.11, 2,533,268.67 and 678,361.44 is: 1,017,732.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,688,530.11 : 2,533,268.67 = 678,361.44 : x
  2. Step 2: Convert to fraction form
    1,688,530.11/2,533,268.67 = 678,361.44/x
  3. Step 3: Cross multiply
    1,688,530.11x = 2,533,268.67 × 678,361.44
  4. Step 4: Simplify right side
    1,688,530.11x = 1,718,471,782,888.08
  5. Step 5: Solve for x
    x = 1,718,471,782,888.08/1,688,530.11
  6. Step 6: Final answer
    x = 1,017,732.39

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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.