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Finding the Fourth Proportional to 569,742.76, 786,213.03 and 311,568.36

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Solution

The fourth proportional to 569,742.76, 786,213.03 and 311,568.36 is: 429,946.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,742.76 : 786,213.03 = 311,568.36 : x
  2. Step 2: Convert to fraction form
    569,742.76/786,213.03 = 311,568.36/x
  3. Step 3: Cross multiply
    569,742.76x = 786,213.03 × 311,568.36
  4. Step 4: Simplify right side
    569,742.76x = 244,959,104,367.73
  5. Step 5: Solve for x
    x = 244,959,104,367.73/569,742.76
  6. Step 6: Final answer
    x = 429,946.85

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Double scale
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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.