Home / 1,221,042.20-1,685,141.73-677,353.16

Finding the Fourth Proportional to 1,221,042.20, 1,685,141.73 and 677,353.16

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Solution

The fourth proportional to 1,221,042.20, 1,685,141.73 and 677,353.16 is: 934,804.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,042.20 : 1,685,141.73 = 677,353.16 : x
  2. Step 2: Convert to fraction form
    1,221,042.20/1,685,141.73 = 677,353.16/x
  3. Step 3: Cross multiply
    1,221,042.20x = 1,685,141.73 × 677,353.16
  4. Step 4: Simplify right side
    1,221,042.20x = 1,141,436,075,863.37
  5. Step 5: Solve for x
    x = 1,141,436,075,863.37/1,221,042.20
  6. Step 6: Final answer
    x = 934,804.77

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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.