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Finding the Fourth Proportional to 569,931.05, 786,501.96 and 311,803.33

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Solution

The fourth proportional to 569,931.05, 786,501.96 and 311,803.33 is: 430,287.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,931.05 : 786,501.96 = 311,803.33 : x
  2. Step 2: Convert to fraction form
    569,931.05/786,501.96 = 311,803.33/x
  3. Step 3: Cross multiply
    569,931.05x = 786,501.96 × 311,803.33
  4. Step 4: Simplify right side
    569,931.05x = 245,233,930,179.53
  5. Step 5: Solve for x
    x = 245,233,930,179.53/569,931.05
  6. Step 6: Final answer
    x = 430,287.01

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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.