Home / 1,279,406.12-1,919,773.36-521,803.40

Finding the Fourth Proportional to 1,279,406.12, 1,919,773.36 and 521,803.40

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Solution

The fourth proportional to 1,279,406.12, 1,919,773.36 and 521,803.40 is: 782,975.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,406.12 : 1,919,773.36 = 521,803.40 : x
  2. Step 2: Convert to fraction form
    1,279,406.12/1,919,773.36 = 521,803.40/x
  3. Step 3: Cross multiply
    1,279,406.12x = 1,919,773.36 × 521,803.40
  4. Step 4: Simplify right side
    1,279,406.12x = 1,001,744,255,574.05
  5. Step 5: Solve for x
    x = 1,001,744,255,574.05/1,279,406.12
  6. Step 6: Final answer
    x = 782,975.98

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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.