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Finding the Fourth Proportional to 676,189, 933,169.98 and 374,383

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Solution

The fourth proportional to 676,189, 933,169.98 and 374,383 is: 516,664.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,189 : 933,169.98 = 374,383 : x
  2. Step 2: Convert to fraction form
    676,189/933,169.98 = 374,383/x
  3. Step 3: Cross multiply
    676,189x = 933,169.98 × 374,383
  4. Step 4: Simplify right side
    676,189x = 349,362,976,622.34
  5. Step 5: Solve for x
    x = 349,362,976,622.34/676,189
  6. Step 6: Final answer
    x = 516,664.68

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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.