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Finding the Fourth Proportional to 570,268.70, 787,146.08 and 328,712.72

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Solution

The fourth proportional to 570,268.70, 787,146.08 and 328,712.72 is: 453,724.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,268.70 : 787,146.08 = 328,712.72 : x
  2. Step 2: Convert to fraction form
    570,268.70/787,146.08 = 328,712.72/x
  3. Step 3: Cross multiply
    570,268.70x = 787,146.08 × 328,712.72
  4. Step 4: Simplify right side
    570,268.70x = 258,744,929,318.44
  5. Step 5: Solve for x
    x = 258,744,929,318.44/570,268.70
  6. Step 6: Final answer
    x = 453,724.59

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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.