Home / 1,201,509.20-1,801,826.40-402,816.80

Finding the Fourth Proportional to 1,201,509.20, 1,801,826.40 and 402,816.80

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Solution

The fourth proportional to 1,201,509.20, 1,801,826.40 and 402,816.80 is: 604,078.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,201,509.20 : 1,801,826.40 = 402,816.80 : x
  2. Step 2: Convert to fraction form
    1,201,509.20/1,801,826.40 = 402,816.80/x
  3. Step 3: Cross multiply
    1,201,509.20x = 1,801,826.40 × 402,816.80
  4. Step 4: Simplify right side
    1,201,509.20x = 725,805,944,603.52
  5. Step 5: Solve for x
    x = 725,805,944,603.52/1,201,509.20
  6. Step 6: Final answer
    x = 604,078.56

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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.