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Finding the Fourth Proportional to 570,268.45, 787,145.73 and 328,712.48

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Solution

The fourth proportional to 570,268.45, 787,145.73 and 328,712.48 is: 453,724.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,268.45 : 787,145.73 = 328,712.48 : x
  2. Step 2: Convert to fraction form
    570,268.45/787,145.73 = 328,712.48/x
  3. Step 3: Cross multiply
    570,268.45x = 787,145.73 × 328,712.48
  4. Step 4: Simplify right side
    570,268.45x = 258,744,621,093.98
  5. Step 5: Solve for x
    x = 258,744,621,093.98/570,268.45
  6. Step 6: Final answer
    x = 453,724.25

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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.