Home / 1,221,395.80-1,685,536.32-677,567.20

Finding the Fourth Proportional to 1,221,395.80, 1,685,536.32 and 677,567.20

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Solution

The fourth proportional to 1,221,395.80, 1,685,536.32 and 677,567.20 is: 935,048.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,395.80 : 1,685,536.32 = 677,567.20 : x
  2. Step 2: Convert to fraction form
    1,221,395.80/1,685,536.32 = 677,567.20/x
  3. Step 3: Cross multiply
    1,221,395.80x = 1,685,536.32 × 677,567.20
  4. Step 4: Simplify right side
    1,221,395.80x = 1,142,064,124,840.70
  5. Step 5: Solve for x
    x = 1,142,064,124,840.70/1,221,395.80
  6. Step 6: Final answer
    x = 935,048.35

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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.