Home / 857,300.31-1,285,999.07-258,344.19

Finding the Fourth Proportional to 857,300.31, 1,285,999.07 and 258,344.19

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Solution

The fourth proportional to 857,300.31, 1,285,999.07 and 258,344.19 is: 387,530.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,300.31 : 1,285,999.07 = 258,344.19 : x
  2. Step 2: Convert to fraction form
    857,300.31/1,285,999.07 = 258,344.19/x
  3. Step 3: Cross multiply
    857,300.31x = 1,285,999.07 × 258,344.19
  4. Step 4: Simplify right side
    857,300.31x = 332,230,386,788.18
  5. Step 5: Solve for x
    x = 332,230,386,788.18/857,300.31
  6. Step 6: Final answer
    x = 387,530.93

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1.5x scale

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.