Home / 1,278,447.30-1,916,342.55-519,963.30

Finding the Fourth Proportional to 1,278,447.30, 1,916,342.55 and 519,963.30

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Solution

The fourth proportional to 1,278,447.30, 1,916,342.55 and 519,963.30 is: 779,404.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,447.30 : 1,916,342.55 = 519,963.30 : x
  2. Step 2: Convert to fraction form
    1,278,447.30/1,916,342.55 = 519,963.30/x
  3. Step 3: Cross multiply
    1,278,447.30x = 1,916,342.55 × 519,963.30
  4. Step 4: Simplify right side
    1,278,447.30x = 996,427,796,228.42
  5. Step 5: Solve for x
    x = 996,427,796,228.42/1,278,447.30
  6. Step 6: Final answer
    x = 779,404.67

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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.