Home / 857,086.72-1,285,870.80-317,334.88

Finding the Fourth Proportional to 857,086.72, 1,285,870.80 and 317,334.88

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Solution

The fourth proportional to 857,086.72, 1,285,870.80 and 317,334.88 is: 476,091.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,086.72 : 1,285,870.80 = 317,334.88 : x
  2. Step 2: Convert to fraction form
    857,086.72/1,285,870.80 = 317,334.88/x
  3. Step 3: Cross multiply
    857,086.72x = 1,285,870.80 × 317,334.88
  4. Step 4: Simplify right side
    857,086.72x = 408,051,656,013.50
  5. Step 5: Solve for x
    x = 408,051,656,013.50/857,086.72
  6. Step 6: Final answer
    x = 476,091.45

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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.