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Finding the Fourth Proportional to 567,558.42, 783,236.40 and 312,918.72

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Solution

The fourth proportional to 567,558.42, 783,236.40 and 312,918.72 is: 431,831.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,558.42 : 783,236.40 = 312,918.72 : x
  2. Step 2: Convert to fraction form
    567,558.42/783,236.40 = 312,918.72/x
  3. Step 3: Cross multiply
    567,558.42x = 783,236.40 × 312,918.72
  4. Step 4: Simplify right side
    567,558.42x = 245,089,331,745.41
  5. Step 5: Solve for x
    x = 245,089,331,745.41/567,558.42
  6. Step 6: Final answer
    x = 431,831.02

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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.