Home / 1,286,030.78-1,928,652.20-889,221.50

Finding the Fourth Proportional to 1,286,030.78, 1,928,652.20 and 889,221.50

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Solution

The fourth proportional to 1,286,030.78, 1,928,652.20 and 889,221.50 is: 1,333,559.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,030.78 : 1,928,652.20 = 889,221.50 : x
  2. Step 2: Convert to fraction form
    1,286,030.78/1,928,652.20 = 889,221.50/x
  3. Step 3: Cross multiply
    1,286,030.78x = 1,928,652.20 × 889,221.50
  4. Step 4: Simplify right side
    1,286,030.78x = 1,714,999,002,262.30
  5. Step 5: Solve for x
    x = 1,714,999,002,262.30/1,286,030.78
  6. Step 6: Final answer
    x = 1,333,559.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.