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Finding the Fourth Proportional to 569,741.78, 786,230.25 and 315,087.50

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Solution

The fourth proportional to 569,741.78, 786,230.25 and 315,087.50 is: 434,813.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,741.78 : 786,230.25 = 315,087.50 : x
  2. Step 2: Convert to fraction form
    569,741.78/786,230.25 = 315,087.50/x
  3. Step 3: Cross multiply
    569,741.78x = 786,230.25 × 315,087.50
  4. Step 4: Simplify right side
    569,741.78x = 247,731,324,680.87
  5. Step 5: Solve for x
    x = 247,731,324,680.87/569,741.78
  6. Step 6: Final answer
    x = 434,813.34

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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.