Home / 1,278,558.30-1,916,509.05-520,074.30

Finding the Fourth Proportional to 1,278,558.30, 1,916,509.05 and 520,074.30

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Solution

The fourth proportional to 1,278,558.30, 1,916,509.05 and 520,074.30 is: 779,571.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,558.30 : 1,916,509.05 = 520,074.30 : x
  2. Step 2: Convert to fraction form
    1,278,558.30/1,916,509.05 = 520,074.30/x
  3. Step 3: Cross multiply
    1,278,558.30x = 1,916,509.05 × 520,074.30
  4. Step 4: Simplify right side
    1,278,558.30x = 996,727,102,622.42
  5. Step 5: Solve for x
    x = 996,727,102,622.42/1,278,558.30
  6. Step 6: Final answer
    x = 779,571.10

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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.