Home / 1,279,938.30-1,919,389.05-438,056.70

Finding the Fourth Proportional to 1,279,938.30, 1,919,389.05 and 438,056.70

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Solution

The fourth proportional to 1,279,938.30, 1,919,389.05 and 438,056.70 is: 656,907.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,938.30 : 1,919,389.05 = 438,056.70 : x
  2. Step 2: Convert to fraction form
    1,279,938.30/1,919,389.05 = 438,056.70/x
  3. Step 3: Cross multiply
    1,279,938.30x = 1,919,389.05 × 438,056.70
  4. Step 4: Simplify right side
    1,279,938.30x = 840,801,233,259.14
  5. Step 5: Solve for x
    x = 840,801,233,259.14/1,279,938.30
  6. Step 6: Final answer
    x = 656,907.63

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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.