Home / 1,221,406.80-1,685,508.63-705,143.28

Finding the Fourth Proportional to 1,221,406.80, 1,685,508.63 and 705,143.28

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Solution

The fourth proportional to 1,221,406.80, 1,685,508.63 and 705,143.28 is: 973,078.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,406.80 : 1,685,508.63 = 705,143.28 : x
  2. Step 2: Convert to fraction form
    1,221,406.80/1,685,508.63 = 705,143.28/x
  3. Step 3: Cross multiply
    1,221,406.80x = 1,685,508.63 × 705,143.28
  4. Step 4: Simplify right side
    1,221,406.80x = 1,188,525,083,826.51
  5. Step 5: Solve for x
    x = 1,188,525,083,826.51/1,221,406.80
  6. Step 6: Final answer
    x = 973,078.82

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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.