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Finding the Fourth Proportional to 586,521, 809,398.98 and 318,249

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Solution

The fourth proportional to 586,521, 809,398.98 and 318,249 is: 439,183.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,521 : 809,398.98 = 318,249 : x
  2. Step 2: Convert to fraction form
    586,521/809,398.98 = 318,249/x
  3. Step 3: Cross multiply
    586,521x = 809,398.98 × 318,249
  4. Step 4: Simplify right side
    586,521x = 257,590,415,986.02
  5. Step 5: Solve for x
    x = 257,590,415,986.02/586,521
  6. Step 6: Final answer
    x = 439,183.62

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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.