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Finding the Fourth Proportional to 586,899, 809,920.62 and 318,627

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Solution

The fourth proportional to 586,899, 809,920.62 and 318,627 is: 439,705.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,899 : 809,920.62 = 318,627 : x
  2. Step 2: Convert to fraction form
    586,899/809,920.62 = 318,627/x
  3. Step 3: Cross multiply
    586,899x = 809,920.62 × 318,627
  4. Step 4: Simplify right side
    586,899x = 258,062,577,388.74
  5. Step 5: Solve for x
    x = 258,062,577,388.74/586,899
  6. Step 6: Final answer
    x = 439,705.26

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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.