Home / 816,521.95-1,126,804.67-449,022.78

Finding the Fourth Proportional to 816,521.95, 1,126,804.67 and 449,022.78

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Solution

The fourth proportional to 816,521.95, 1,126,804.67 and 449,022.78 is: 619,653.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,521.95 : 1,126,804.67 = 449,022.78 : x
  2. Step 2: Convert to fraction form
    816,521.95/1,126,804.67 = 449,022.78/x
  3. Step 3: Cross multiply
    816,521.95x = 1,126,804.67 × 449,022.78
  4. Step 4: Simplify right side
    816,521.95x = 505,960,965,440.38
  5. Step 5: Solve for x
    x = 505,960,965,440.38/816,521.95
  6. Step 6: Final answer
    x = 619,653.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.