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Finding the Fourth Proportional to 586,908, 809,933.04 and 318,636

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Solution

The fourth proportional to 586,908, 809,933.04 and 318,636 is: 439,717.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,908 : 809,933.04 = 318,636 : x
  2. Step 2: Convert to fraction form
    586,908/809,933.04 = 318,636/x
  3. Step 3: Cross multiply
    586,908x = 809,933.04 × 318,636
  4. Step 4: Simplify right side
    586,908x = 258,073,824,133.44
  5. Step 5: Solve for x
    x = 258,073,824,133.44/586,908
  6. Step 6: Final answer
    x = 439,717.68

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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.