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Finding the Fourth Proportional to 856,271.60, 1,284,018.60 and 323,615.60

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Solution

The fourth proportional to 856,271.60, 1,284,018.60 and 323,615.60 is: 485,276.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,271.60 : 1,284,018.60 = 323,615.60 : x
  2. Step 2: Convert to fraction form
    856,271.60/1,284,018.60 = 323,615.60/x
  3. Step 3: Cross multiply
    856,271.60x = 1,284,018.60 × 323,615.60
  4. Step 4: Simplify right side
    856,271.60x = 415,528,449,650.16
  5. Step 5: Solve for x
    x = 415,528,449,650.16/856,271.60
  6. Step 6: Final answer
    x = 485,276.46

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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.