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Finding the Fourth Proportional to 1,434,477.17, 1,979,578.49 and 789,895.83

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Solution

The fourth proportional to 1,434,477.17, 1,979,578.49 and 789,895.83 is: 1,090,056.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,434,477.17 : 1,979,578.49 = 789,895.83 : x
  2. Step 2: Convert to fraction form
    1,434,477.17/1,979,578.49 = 789,895.83/x
  3. Step 3: Cross multiply
    1,434,477.17x = 1,979,578.49 × 789,895.83
  4. Step 4: Simplify right side
    1,434,477.17x = 1,563,660,790,459.22
  5. Step 5: Solve for x
    x = 1,563,660,790,459.22/1,434,477.17
  6. Step 6: Final answer
    x = 1,090,056.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.