Home / 857,539.90-1,285,894.41-258,389.38

Finding the Fourth Proportional to 857,539.90, 1,285,894.41 and 258,389.38

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Solution

The fourth proportional to 857,539.90, 1,285,894.41 and 258,389.38 is: 387,458.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,539.90 : 1,285,894.41 = 258,389.38 : x
  2. Step 2: Convert to fraction form
    857,539.90/1,285,894.41 = 258,389.38/x
  3. Step 3: Cross multiply
    857,539.90x = 1,285,894.41 × 258,389.38
  4. Step 4: Simplify right side
    857,539.90x = 332,261,459,345.37
  5. Step 5: Solve for x
    x = 332,261,459,345.37/857,539.90
  6. Step 6: Final answer
    x = 387,458.89

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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.