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Finding the Fourth Proportional to 570,689.44, 787,520.02 and 312,516.27

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Solution

The fourth proportional to 570,689.44, 787,520.02 and 312,516.27 is: 431,255.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,689.44 : 787,520.02 = 312,516.27 : x
  2. Step 2: Convert to fraction form
    570,689.44/787,520.02 = 312,516.27/x
  3. Step 3: Cross multiply
    570,689.44x = 787,520.02 × 312,516.27
  4. Step 4: Simplify right side
    570,689.44x = 246,112,819,200.73
  5. Step 5: Solve for x
    x = 246,112,819,200.73/570,689.44
  6. Step 6: Final answer
    x = 431,255.25

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1.5x scale

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.