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Finding the Fourth Proportional to 586,816.50, 809,816.53 and 318,544.50

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Solution

The fourth proportional to 586,816.50, 809,816.53 and 318,544.50 is: 439,596.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,816.50 : 809,816.53 = 318,544.50 : x
  2. Step 2: Convert to fraction form
    586,816.50/809,816.53 = 318,544.50/x
  3. Step 3: Cross multiply
    586,816.50x = 809,816.53 × 318,544.50
  4. Step 4: Simplify right side
    586,816.50x = 257,962,601,640.59
  5. Step 5: Solve for x
    x = 257,962,601,640.59/586,816.50
  6. Step 6: Final answer
    x = 439,596.71

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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.