Home / 827,779.10-1,240,998.98-258,867.50

Finding the Fourth Proportional to 827,779.10, 1,240,998.98 and 258,867.50

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Solution

The fourth proportional to 827,779.10, 1,240,998.98 and 258,867.50 is: 388,091.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,779.10 : 1,240,998.98 = 258,867.50 : x
  2. Step 2: Convert to fraction form
    827,779.10/1,240,998.98 = 258,867.50/x
  3. Step 3: Cross multiply
    827,779.10x = 1,240,998.98 × 258,867.50
  4. Step 4: Simplify right side
    827,779.10x = 321,254,295,955.82
  5. Step 5: Solve for x
    x = 321,254,295,955.82/827,779.10
  6. Step 6: Final answer
    x = 388,091.82

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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.