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Finding the Fourth Proportional to 569,447.37, 785,840.94 and 311,324.90

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Solution

The fourth proportional to 569,447.37, 785,840.94 and 311,324.90 is: 429,630.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,447.37 : 785,840.94 = 311,324.90 : x
  2. Step 2: Convert to fraction form
    569,447.37/785,840.94 = 311,324.90/x
  3. Step 3: Cross multiply
    569,447.37x = 785,840.94 × 311,324.90
  4. Step 4: Simplify right side
    569,447.37x = 244,651,848,132.20
  5. Step 5: Solve for x
    x = 244,651,848,132.20/569,447.37
  6. Step 6: Final answer
    x = 429,630.31

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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.