Home / 857,145.18-1,285,968.69-383,725.02

Finding the Fourth Proportional to 857,145.18, 1,285,968.69 and 383,725.02

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Solution

The fourth proportional to 857,145.18, 1,285,968.69 and 383,725.02 is: 575,699.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,145.18 : 1,285,968.69 = 383,725.02 : x
  2. Step 2: Convert to fraction form
    857,145.18/1,285,968.69 = 383,725.02/x
  3. Step 3: Cross multiply
    857,145.18x = 1,285,968.69 × 383,725.02
  4. Step 4: Simplify right side
    857,145.18x = 493,458,361,289.62
  5. Step 5: Solve for x
    x = 493,458,361,289.62/857,145.18
  6. Step 6: Final answer
    x = 575,699.86

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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.