Home / 1,387,933.23-1,915,200.41-767,639.84

Finding the Fourth Proportional to 1,387,933.23, 1,915,200.41 and 767,639.84

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Solution

The fourth proportional to 1,387,933.23, 1,915,200.41 and 767,639.84 is: 1,059,261.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,933.23 : 1,915,200.41 = 767,639.84 : x
  2. Step 2: Convert to fraction form
    1,387,933.23/1,915,200.41 = 767,639.84/x
  3. Step 3: Cross multiply
    1,387,933.23x = 1,915,200.41 × 767,639.84
  4. Step 4: Simplify right side
    1,387,933.23x = 1,470,184,122,886.13
  5. Step 5: Solve for x
    x = 1,470,184,122,886.13/1,387,933.23
  6. Step 6: Final answer
    x = 1,059,261.42

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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.