Home / 821,779.12-1,134,057.54-459,216.64

Finding the Fourth Proportional to 821,779.12, 1,134,057.54 and 459,216.64

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Solution

The fourth proportional to 821,779.12, 1,134,057.54 and 459,216.64 is: 633,720.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,779.12 : 1,134,057.54 = 459,216.64 : x
  2. Step 2: Convert to fraction form
    821,779.12/1,134,057.54 = 459,216.64/x
  3. Step 3: Cross multiply
    821,779.12x = 1,134,057.54 × 459,216.64
  4. Step 4: Simplify right side
    821,779.12x = 520,778,093,085.47
  5. Step 5: Solve for x
    x = 520,778,093,085.47/821,779.12
  6. Step 6: Final answer
    x = 633,720.28

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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.