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Finding the Fourth Proportional to 569,997.48, 786,567.78 and 311,868.84

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Solution

The fourth proportional to 569,997.48, 786,567.78 and 311,868.84 is: 430,363.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,997.48 : 786,567.78 = 311,868.84 : x
  2. Step 2: Convert to fraction form
    569,997.48/786,567.78 = 311,868.84/x
  3. Step 3: Cross multiply
    569,997.48x = 786,567.78 × 311,868.84
  4. Step 4: Simplify right side
    569,997.48x = 245,305,981,129.98
  5. Step 5: Solve for x
    x = 245,305,981,129.98/569,997.48
  6. Step 6: Final answer
    x = 430,363.27

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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.