Home / 857,405.07-1,286,106.93-258,366.24

Finding the Fourth Proportional to 857,405.07, 1,286,106.93 and 258,366.24

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Solution

The fourth proportional to 857,405.07, 1,286,106.93 and 258,366.24 is: 387,549.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,405.07 : 1,286,106.93 = 258,366.24 : x
  2. Step 2: Convert to fraction form
    857,405.07/1,286,106.93 = 258,366.24/x
  3. Step 3: Cross multiply
    857,405.07x = 1,286,106.93 × 258,366.24
  4. Step 4: Simplify right side
    857,405.07x = 332,286,611,742.04
  5. Step 5: Solve for x
    x = 332,286,611,742.04/857,405.07
  6. Step 6: Final answer
    x = 387,549.16

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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.