Home / 857,403.76-1,286,104.96-258,364.92

Finding the Fourth Proportional to 857,403.76, 1,286,104.96 and 258,364.92

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Solution

The fourth proportional to 857,403.76, 1,286,104.96 and 258,364.92 is: 387,547.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,403.76 : 1,286,104.96 = 258,364.92 : x
  2. Step 2: Convert to fraction form
    857,403.76/1,286,104.96 = 258,364.92/x
  3. Step 3: Cross multiply
    857,403.76x = 1,286,104.96 × 258,364.92
  4. Step 4: Simplify right side
    857,403.76x = 332,284,407,671.35
  5. Step 5: Solve for x
    x = 332,284,407,671.35/857,403.76
  6. Step 6: Final answer
    x = 387,547.18

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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.