Home / 808,711.23-1,211,868.77-328,354.90

Finding the Fourth Proportional to 808,711.23, 1,211,868.77 and 328,354.90

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Solution

The fourth proportional to 808,711.23, 1,211,868.77 and 328,354.90 is: 492,045.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,711.23 : 1,211,868.77 = 328,354.90 : x
  2. Step 2: Convert to fraction form
    808,711.23/1,211,868.77 = 328,354.90/x
  3. Step 3: Cross multiply
    808,711.23x = 1,211,868.77 × 328,354.90
  4. Step 4: Simplify right side
    808,711.23x = 397,923,048,786.47
  5. Step 5: Solve for x
    x = 397,923,048,786.47/808,711.23
  6. Step 6: Final answer
    x = 492,045.90

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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.