Home / 920,871.82-1,381,521.39-289,769.23

Finding the Fourth Proportional to 920,871.82, 1,381,521.39 and 289,769.23

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Solution

The fourth proportional to 920,871.82, 1,381,521.39 and 289,769.23 is: 434,721.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,871.82 : 1,381,521.39 = 289,769.23 : x
  2. Step 2: Convert to fraction form
    920,871.82/1,381,521.39 = 289,769.23/x
  3. Step 3: Cross multiply
    920,871.82x = 1,381,521.39 × 289,769.23
  4. Step 4: Simplify right side
    920,871.82x = 400,322,389,408.83
  5. Step 5: Solve for x
    x = 400,322,389,408.83/920,871.82
  6. Step 6: Final answer
    x = 434,721.08

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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.