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Finding the Fourth Proportional to 586,355.34, 809,171.92 and 318,083.34

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Solution

The fourth proportional to 586,355.34, 809,171.92 and 318,083.34 is: 438,955.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,355.34 : 809,171.92 = 318,083.34 : x
  2. Step 2: Convert to fraction form
    586,355.34/809,171.92 = 318,083.34/x
  3. Step 3: Cross multiply
    586,355.34x = 809,171.92 × 318,083.34
  4. Step 4: Simplify right side
    586,355.34x = 257,384,106,947.81
  5. Step 5: Solve for x
    x = 257,384,106,947.81/586,355.34
  6. Step 6: Final answer
    x = 438,955.85

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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.