Home / 1,030,861.80-1,422,637.18-643,906.32

Finding the Fourth Proportional to 1,030,861.80, 1,422,637.18 and 643,906.32

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Solution

The fourth proportional to 1,030,861.80, 1,422,637.18 and 643,906.32 is: 888,620.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,030,861.80 : 1,422,637.18 = 643,906.32 : x
  2. Step 2: Convert to fraction form
    1,030,861.80/1,422,637.18 = 643,906.32/x
  3. Step 3: Cross multiply
    1,030,861.80x = 1,422,637.18 × 643,906.32
  4. Step 4: Simplify right side
    1,030,861.80x = 916,045,071,268.98
  5. Step 5: Solve for x
    x = 916,045,071,268.98/1,030,861.80
  6. Step 6: Final answer
    x = 888,620.64

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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.