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Finding the Fourth Proportional to 518,113.26, 776,172.78 and 317,848.86

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Solution

The fourth proportional to 518,113.26, 776,172.78 and 317,848.86 is: 476,161.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,113.26 : 776,172.78 = 317,848.86 : x
  2. Step 2: Convert to fraction form
    518,113.26/776,172.78 = 317,848.86/x
  3. Step 3: Cross multiply
    518,113.26x = 776,172.78 × 317,848.86
  4. Step 4: Simplify right side
    518,113.26x = 246,705,633,286.03
  5. Step 5: Solve for x
    x = 246,705,633,286.03/518,113.26
  6. Step 6: Final answer
    x = 476,161.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.