Home / 490,684.52-677,026.40-286,619.60

Finding the Fourth Proportional to 490,684.52, 677,026.40 and 286,619.60

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Solution

The fourth proportional to 490,684.52, 677,026.40 and 286,619.60 is: 395,465.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,684.52 : 677,026.40 = 286,619.60 : x
  2. Step 2: Convert to fraction form
    490,684.52/677,026.40 = 286,619.60/x
  3. Step 3: Cross multiply
    490,684.52x = 677,026.40 × 286,619.60
  4. Step 4: Simplify right side
    490,684.52x = 194,049,035,957.44
  5. Step 5: Solve for x
    x = 194,049,035,957.44/490,684.52
  6. Step 6: Final answer
    x = 395,465.98

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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.