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Finding the Fourth Proportional to 586,582.43, 809,483.75 and 318,310.43

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Solution

The fourth proportional to 586,582.43, 809,483.75 and 318,310.43 is: 439,268.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,582.43 : 809,483.75 = 318,310.43 : x
  2. Step 2: Convert to fraction form
    586,582.43/809,483.75 = 318,310.43/x
  3. Step 3: Cross multiply
    586,582.43x = 809,483.75 × 318,310.43
  4. Step 4: Simplify right side
    586,582.43x = 257,667,114,901.54
  5. Step 5: Solve for x
    x = 257,667,114,901.54/586,582.43
  6. Step 6: Final answer
    x = 439,268.39

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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.