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Finding the Fourth Proportional to 567,518.37, 783,180.80 and 312,878.67

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Solution

The fourth proportional to 567,518.37, 783,180.80 and 312,878.67 is: 431,775.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,518.37 : 783,180.80 = 312,878.67 : x
  2. Step 2: Convert to fraction form
    567,518.37/783,180.80 = 312,878.67/x
  3. Step 3: Cross multiply
    567,518.37x = 783,180.80 × 312,878.67
  4. Step 4: Simplify right side
    567,518.37x = 245,040,567,073.54
  5. Step 5: Solve for x
    x = 245,040,567,073.54/567,518.37
  6. Step 6: Final answer
    x = 431,775.57

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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.