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Finding the Fourth Proportional to 570,691.44, 787,522.78 and 312,518.27

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Solution

The fourth proportional to 570,691.44, 787,522.78 and 312,518.27 is: 431,258.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,691.44 : 787,522.78 = 312,518.27 : x
  2. Step 2: Convert to fraction form
    570,691.44/787,522.78 = 312,518.27/x
  3. Step 3: Cross multiply
    570,691.44x = 787,522.78 × 312,518.27
  4. Step 4: Simplify right side
    570,691.44x = 246,115,256,791.19
  5. Step 5: Solve for x
    x = 246,115,256,791.19/570,691.44
  6. Step 6: Final answer
    x = 431,258.01

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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.