Home / 920,835.27-1,381,121.69-289,732.68

Finding the Fourth Proportional to 920,835.27, 1,381,121.69 and 289,732.68

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Solution

The fourth proportional to 920,835.27, 1,381,121.69 and 289,732.68 is: 434,557.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,835.27 : 1,381,121.69 = 289,732.68 : x
  2. Step 2: Convert to fraction form
    920,835.27/1,381,121.69 = 289,732.68/x
  3. Step 3: Cross multiply
    920,835.27x = 1,381,121.69 × 289,732.68
  4. Step 4: Simplify right side
    920,835.27x = 400,156,087,201.17
  5. Step 5: Solve for x
    x = 400,156,087,201.17/920,835.27
  6. Step 6: Final answer
    x = 434,557.73

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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.