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Finding the Fourth Proportional to 805,427.86, 1,111,519 and 442,879.32

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Solution

The fourth proportional to 805,427.86, 1,111,519 and 442,879.32 is: 611,189.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,427.86 : 1,111,519 = 442,879.32 : x
  2. Step 2: Convert to fraction form
    805,427.86/1,111,519 = 442,879.32/x
  3. Step 3: Cross multiply
    805,427.86x = 1,111,519 × 442,879.32
  4. Step 4: Simplify right side
    805,427.86x = 492,268,778,887.08
  5. Step 5: Solve for x
    x = 492,268,778,887.08/805,427.86
  6. Step 6: Final answer
    x = 611,189.16

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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.