Home / 858,109.52-1,287,579-353,043.20

Finding the Fourth Proportional to 858,109.52, 1,287,579 and 353,043.20

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Solution

The fourth proportional to 858,109.52, 1,287,579 and 353,043.20 is: 529,735.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,109.52 : 1,287,579 = 353,043.20 : x
  2. Step 2: Convert to fraction form
    858,109.52/1,287,579 = 353,043.20/x
  3. Step 3: Cross multiply
    858,109.52x = 1,287,579 × 353,043.20
  4. Step 4: Simplify right side
    858,109.52x = 454,571,010,412.80
  5. Step 5: Solve for x
    x = 454,571,010,412.80/858,109.52
  6. Step 6: Final answer
    x = 529,735.42

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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.