Home / 809,445.80-1,117,181.43-482,779.78

Finding the Fourth Proportional to 809,445.80, 1,117,181.43 and 482,779.78

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Solution

The fourth proportional to 809,445.80, 1,117,181.43 and 482,779.78 is: 666,323.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,445.80 : 1,117,181.43 = 482,779.78 : x
  2. Step 2: Convert to fraction form
    809,445.80/1,117,181.43 = 482,779.78/x
  3. Step 3: Cross multiply
    809,445.80x = 1,117,181.43 × 482,779.78
  4. Step 4: Simplify right side
    809,445.80x = 539,352,604,995.49
  5. Step 5: Solve for x
    x = 539,352,604,995.49/809,445.80
  6. Step 6: Final answer
    x = 666,323.31

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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.