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Finding the Fourth Proportional to 625,651.40, 863,403.36 and 339,176

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Solution

The fourth proportional to 625,651.40, 863,403.36 and 339,176 is: 468,065.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,651.40 : 863,403.36 = 339,176 : x
  2. Step 2: Convert to fraction form
    625,651.40/863,403.36 = 339,176/x
  3. Step 3: Cross multiply
    625,651.40x = 863,403.36 × 339,176
  4. Step 4: Simplify right side
    625,651.40x = 292,845,698,031.36
  5. Step 5: Solve for x
    x = 292,845,698,031.36/625,651.40
  6. Step 6: Final answer
    x = 468,065.28

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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.