Home / 1,221,411.80-1,685,558.40-677,583.20

Finding the Fourth Proportional to 1,221,411.80, 1,685,558.40 and 677,583.20

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Solution

The fourth proportional to 1,221,411.80, 1,685,558.40 and 677,583.20 is: 935,070.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,411.80 : 1,685,558.40 = 677,583.20 : x
  2. Step 2: Convert to fraction form
    1,221,411.80/1,685,558.40 = 677,583.20/x
  3. Step 3: Cross multiply
    1,221,411.80x = 1,685,558.40 × 677,583.20
  4. Step 4: Simplify right side
    1,221,411.80x = 1,142,106,054,458.88
  5. Step 5: Solve for x
    x = 1,142,106,054,458.88/1,221,411.80
  6. Step 6: Final answer
    x = 935,070.43

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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.