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Finding the Fourth Proportional to 626,684, 864,825 and 358,412

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Solution

The fourth proportional to 626,684, 864,825 and 358,412 is: 494,609.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,684 : 864,825 = 358,412 : x
  2. Step 2: Convert to fraction form
    626,684/864,825 = 358,412/x
  3. Step 3: Cross multiply
    626,684x = 864,825 × 358,412
  4. Step 4: Simplify right side
    626,684x = 309,963,657,900
  5. Step 5: Solve for x
    x = 309,963,657,900/626,684
  6. Step 6: Final answer
    x = 494,609.18

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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.