Home / 1,278,383.76-1,918,431-530,429.76

Finding the Fourth Proportional to 1,278,383.76, 1,918,431 and 530,429.76

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Solution

The fourth proportional to 1,278,383.76, 1,918,431 and 530,429.76 is: 795,999.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,383.76 : 1,918,431 = 530,429.76 : x
  2. Step 2: Convert to fraction form
    1,278,383.76/1,918,431 = 530,429.76/x
  3. Step 3: Cross multiply
    1,278,383.76x = 1,918,431 × 530,429.76
  4. Step 4: Simplify right side
    1,278,383.76x = 1,017,592,894,906.56
  5. Step 5: Solve for x
    x = 1,017,592,894,906.56/1,278,383.76
  6. Step 6: Final answer
    x = 795,999.55

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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.