Home / 886,643.40-1,329,965.10-872,646.60

Finding the Fourth Proportional to 886,643.40, 1,329,965.10 and 872,646.60

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Solution

The fourth proportional to 886,643.40, 1,329,965.10 and 872,646.60 is: 1,308,969.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,643.40 : 1,329,965.10 = 872,646.60 : x
  2. Step 2: Convert to fraction form
    886,643.40/1,329,965.10 = 872,646.60/x
  3. Step 3: Cross multiply
    886,643.40x = 1,329,965.10 × 872,646.60
  4. Step 4: Simplify right side
    886,643.40x = 1,160,589,522,633.66
  5. Step 5: Solve for x
    x = 1,160,589,522,633.66/886,643.40
  6. Step 6: Final answer
    x = 1,308,969.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.