Home / 1,392,145.20-1,922,085.36-1,069,277.52

Finding the Fourth Proportional to 1,392,145.20, 1,922,085.36 and 1,069,277.52

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Solution

The fourth proportional to 1,392,145.20, 1,922,085.36 and 1,069,277.52 is: 1,476,313.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392,145.20 : 1,922,085.36 = 1,069,277.52 : x
  2. Step 2: Convert to fraction form
    1,392,145.20/1,922,085.36 = 1,069,277.52/x
  3. Step 3: Cross multiply
    1,392,145.20x = 1,922,085.36 × 1,069,277.52
  4. Step 4: Simplify right side
    1,392,145.20x = 2,055,242,666,969.11
  5. Step 5: Solve for x
    x = 2,055,242,666,969.11/1,392,145.20
  6. Step 6: Final answer
    x = 1,476,313.44

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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.