Home / 790,039.12-1,090,249.32-450,500.08

Finding the Fourth Proportional to 790,039.12, 1,090,249.32 and 450,500.08

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Solution

The fourth proportional to 790,039.12, 1,090,249.32 and 450,500.08 is: 621,687.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,039.12 : 1,090,249.32 = 450,500.08 : x
  2. Step 2: Convert to fraction form
    790,039.12/1,090,249.32 = 450,500.08/x
  3. Step 3: Cross multiply
    790,039.12x = 1,090,249.32 × 450,500.08
  4. Step 4: Simplify right side
    790,039.12x = 491,157,405,879.95
  5. Step 5: Solve for x
    x = 491,157,405,879.95/790,039.12
  6. Step 6: Final answer
    x = 621,687.45

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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.