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Finding the Fourth Proportional to 676,485, 933,579 and 374,679

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Solution

The fourth proportional to 676,485, 933,579 and 374,679 is: 517,073.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,485 : 933,579 = 374,679 : x
  2. Step 2: Convert to fraction form
    676,485/933,579 = 374,679/x
  3. Step 3: Cross multiply
    676,485x = 933,579 × 374,679
  4. Step 4: Simplify right side
    676,485x = 349,792,446,141
  5. Step 5: Solve for x
    x = 349,792,446,141/676,485
  6. Step 6: Final answer
    x = 517,073.47

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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.