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Finding the Fourth Proportional to 576,687.83, 795,813.77 and 318,559.21

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Solution

The fourth proportional to 576,687.83, 795,813.77 and 318,559.21 is: 439,603.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,687.83 : 795,813.77 = 318,559.21 : x
  2. Step 2: Convert to fraction form
    576,687.83/795,813.77 = 318,559.21/x
  3. Step 3: Cross multiply
    576,687.83x = 795,813.77 × 318,559.21
  4. Step 4: Simplify right side
    576,687.83x = 253,513,804,685.19
  5. Step 5: Solve for x
    x = 253,513,804,685.19/576,687.83
  6. Step 6: Final answer
    x = 439,603.19

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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.