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Finding the Fourth Proportional to 586,616.29, 809,530.48 and 318,344.29

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Solution

The fourth proportional to 586,616.29, 809,530.48 and 318,344.29 is: 439,315.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,616.29 : 809,530.48 = 318,344.29 : x
  2. Step 2: Convert to fraction form
    586,616.29/809,530.48 = 318,344.29/x
  3. Step 3: Cross multiply
    586,616.29x = 809,530.48 × 318,344.29
  4. Step 4: Simplify right side
    586,616.29x = 257,709,405,888.96
  5. Step 5: Solve for x
    x = 257,709,405,888.96/586,616.29
  6. Step 6: Final answer
    x = 439,315.12

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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.