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Finding the Fourth Proportional to 671,844, 1,007,759.76 and 272,389.80

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Solution

The fourth proportional to 671,844, 1,007,759.76 and 272,389.80 is: 408,582.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,844 : 1,007,759.76 = 272,389.80 : x
  2. Step 2: Convert to fraction form
    671,844/1,007,759.76 = 272,389.80/x
  3. Step 3: Cross multiply
    671,844x = 1,007,759.76 × 272,389.80
  4. Step 4: Simplify right side
    671,844x = 274,503,479,474.45
  5. Step 5: Solve for x
    x = 274,503,479,474.45/671,844
  6. Step 6: Final answer
    x = 408,582.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.