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Finding the Fourth Proportional to 1,059,890.40, 1,589,835.60 and 943,768.80

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Solution

The fourth proportional to 1,059,890.40, 1,589,835.60 and 943,768.80 is: 1,415,653.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,059,890.40 : 1,589,835.60 = 943,768.80 : x
  2. Step 2: Convert to fraction form
    1,059,890.40/1,589,835.60 = 943,768.80/x
  3. Step 3: Cross multiply
    1,059,890.40x = 1,589,835.60 × 943,768.80
  4. Step 4: Simplify right side
    1,059,890.40x = 1,500,437,236,409.28
  5. Step 5: Solve for x
    x = 1,500,437,236,409.28/1,059,890.40
  6. Step 6: Final answer
    x = 1,415,653.20

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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.