Home / 469,286.90-647,567.30-288,006.47

Finding the Fourth Proportional to 469,286.90, 647,567.30 and 288,006.47

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Solution

The fourth proportional to 469,286.90, 647,567.30 and 288,006.47 is: 397,419.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,286.90 : 647,567.30 = 288,006.47 : x
  2. Step 2: Convert to fraction form
    469,286.90/647,567.30 = 288,006.47/x
  3. Step 3: Cross multiply
    469,286.90x = 647,567.30 × 288,006.47
  4. Step 4: Simplify right side
    469,286.90x = 186,503,570,720.40
  5. Step 5: Solve for x
    x = 186,503,570,720.40/469,286.90
  6. Step 6: Final answer
    x = 397,419.09

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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.