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Finding the Fourth Proportional to 586,629, 809,557.74 and 318,357

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Solution

The fourth proportional to 586,629, 809,557.74 and 318,357 is: 439,337.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,629 : 809,557.74 = 318,357 : x
  2. Step 2: Convert to fraction form
    586,629/809,557.74 = 318,357/x
  3. Step 3: Cross multiply
    586,629x = 809,557.74 × 318,357
  4. Step 4: Simplify right side
    586,629x = 257,728,373,433.18
  5. Step 5: Solve for x
    x = 257,728,373,433.18/586,629
  6. Step 6: Final answer
    x = 439,337.93

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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.