Home / 857,824.31-1,286,570.40-289,145.58

Finding the Fourth Proportional to 857,824.31, 1,286,570.40 and 289,145.58

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Solution

The fourth proportional to 857,824.31, 1,286,570.40 and 289,145.58 is: 433,662.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,824.31 : 1,286,570.40 = 289,145.58 : x
  2. Step 2: Convert to fraction form
    857,824.31/1,286,570.40 = 289,145.58/x
  3. Step 3: Cross multiply
    857,824.31x = 1,286,570.40 × 289,145.58
  4. Step 4: Simplify right side
    857,824.31x = 372,006,144,518.83
  5. Step 5: Solve for x
    x = 372,006,144,518.83/857,824.31
  6. Step 6: Final answer
    x = 433,662.40

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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.