Home / 1,398,094.51-1,929,340.18-809,418.77

Finding the Fourth Proportional to 1,398,094.51, 1,929,340.18 and 809,418.77

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Solution

The fourth proportional to 1,398,094.51, 1,929,340.18 and 809,418.77 is: 1,116,980.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,094.51 : 1,929,340.18 = 809,418.77 : x
  2. Step 2: Convert to fraction form
    1,398,094.51/1,929,340.18 = 809,418.77/x
  3. Step 3: Cross multiply
    1,398,094.51x = 1,929,340.18 × 809,418.77
  4. Step 4: Simplify right side
    1,398,094.51x = 1,561,644,158,383.62
  5. Step 5: Solve for x
    x = 1,561,644,158,383.62/1,398,094.51
  6. Step 6: Final answer
    x = 1,116,980.40

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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.