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Finding the Fourth Proportional to 625,416.84, 863,076 and 338,936.94

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Solution

The fourth proportional to 625,416.84, 863,076 and 338,936.94 is: 467,733.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,416.84 : 863,076 = 338,936.94 : x
  2. Step 2: Convert to fraction form
    625,416.84/863,076 = 338,936.94/x
  3. Step 3: Cross multiply
    625,416.84x = 863,076 × 338,936.94
  4. Step 4: Simplify right side
    625,416.84x = 292,528,338,427.44
  5. Step 5: Solve for x
    x = 292,528,338,427.44/625,416.84
  6. Step 6: Final answer
    x = 467,733.39

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1.5x scale

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.