Home / 857,786.51-1,286,305.95-289,061.62

Finding the Fourth Proportional to 857,786.51, 1,286,305.95 and 289,061.62

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Solution

The fourth proportional to 857,786.51, 1,286,305.95 and 289,061.62 is: 433,466.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,786.51 : 1,286,305.95 = 289,061.62 : x
  2. Step 2: Convert to fraction form
    857,786.51/1,286,305.95 = 289,061.62/x
  3. Step 3: Cross multiply
    857,786.51x = 1,286,305.95 × 289,061.62
  4. Step 4: Simplify right side
    857,786.51x = 371,821,681,722.64
  5. Step 5: Solve for x
    x = 371,821,681,722.64/857,786.51
  6. Step 6: Final answer
    x = 433,466.46

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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.