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Finding the Fourth Proportional to 586,505.02, 809,376.42 and 318,233.02

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Solution

The fourth proportional to 586,505.02, 809,376.42 and 318,233.02 is: 439,161.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,505.02 : 809,376.42 = 318,233.02 : x
  2. Step 2: Convert to fraction form
    586,505.02/809,376.42 = 318,233.02/x
  3. Step 3: Cross multiply
    586,505.02x = 809,376.42 × 318,233.02
  4. Step 4: Simplify right side
    586,505.02x = 257,570,302,453.39
  5. Step 5: Solve for x
    x = 257,570,302,453.39/586,505.02
  6. Step 6: Final answer
    x = 439,161.29

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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.