Home / 1,189,288.80-1,784,205.60-515,483.20

Finding the Fourth Proportional to 1,189,288.80, 1,784,205.60 and 515,483.20

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Solution

The fourth proportional to 1,189,288.80, 1,784,205.60 and 515,483.20 is: 773,342.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,288.80 : 1,784,205.60 = 515,483.20 : x
  2. Step 2: Convert to fraction form
    1,189,288.80/1,784,205.60 = 515,483.20/x
  3. Step 3: Cross multiply
    1,189,288.80x = 1,784,205.60 × 515,483.20
  4. Step 4: Simplify right side
    1,189,288.80x = 919,728,012,145.92
  5. Step 5: Solve for x
    x = 919,728,012,145.92/1,189,288.80
  6. Step 6: Final answer
    x = 773,342.87

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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.