Home / 818,268.12-1,129,200.90-455,684.04

Finding the Fourth Proportional to 818,268.12, 1,129,200.90 and 455,684.04

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Solution

The fourth proportional to 818,268.12, 1,129,200.90 and 455,684.04 is: 628,838.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,268.12 : 1,129,200.90 = 455,684.04 : x
  2. Step 2: Convert to fraction form
    818,268.12/1,129,200.90 = 455,684.04/x
  3. Step 3: Cross multiply
    818,268.12x = 1,129,200.90 × 455,684.04
  4. Step 4: Simplify right side
    818,268.12x = 514,558,828,083.64
  5. Step 5: Solve for x
    x = 514,558,828,083.64/818,268.12
  6. Step 6: Final answer
    x = 628,838.90

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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.