Home / 1,278,538.80-1,916,479.80-520,054.80

Finding the Fourth Proportional to 1,278,538.80, 1,916,479.80 and 520,054.80

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Solution

The fourth proportional to 1,278,538.80, 1,916,479.80 and 520,054.80 is: 779,541.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,538.80 : 1,916,479.80 = 520,054.80 : x
  2. Step 2: Convert to fraction form
    1,278,538.80/1,916,479.80 = 520,054.80/x
  3. Step 3: Cross multiply
    1,278,538.80x = 1,916,479.80 × 520,054.80
  4. Step 4: Simplify right side
    1,278,538.80x = 996,674,519,093.04
  5. Step 5: Solve for x
    x = 996,674,519,093.04/1,278,538.80
  6. Step 6: Final answer
    x = 779,541.86

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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.