Home / 1,288,212.12-1,777,698.90-715,237.56

Finding the Fourth Proportional to 1,288,212.12, 1,777,698.90 and 715,237.56

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Solution

The fourth proportional to 1,288,212.12, 1,777,698.90 and 715,237.56 is: 987,009.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,212.12 : 1,777,698.90 = 715,237.56 : x
  2. Step 2: Convert to fraction form
    1,288,212.12/1,777,698.90 = 715,237.56/x
  3. Step 3: Cross multiply
    1,288,212.12x = 1,777,698.90 × 715,237.56
  4. Step 4: Simplify right side
    1,288,212.12x = 1,271,477,023,650.68
  5. Step 5: Solve for x
    x = 1,271,477,023,650.68/1,288,212.12
  6. Step 6: Final answer
    x = 987,009.05

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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.