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Finding the Fourth Proportional to 569,511.54, 785,927.34 and 311,405.22

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Solution

The fourth proportional to 569,511.54, 785,927.34 and 311,405.22 is: 429,739.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,511.54 : 785,927.34 = 311,405.22 : x
  2. Step 2: Convert to fraction form
    569,511.54/785,927.34 = 311,405.22/x
  3. Step 3: Cross multiply
    569,511.54x = 785,927.34 × 311,405.22
  4. Step 4: Simplify right side
    569,511.54x = 244,741,876,216.72
  5. Step 5: Solve for x
    x = 244,741,876,216.72/569,511.54
  6. Step 6: Final answer
    x = 429,739.98

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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.