Home / 1,317,857.40-1,976,037.06-518,705.76

Finding the Fourth Proportional to 1,317,857.40, 1,976,037.06 and 518,705.76

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Solution

The fourth proportional to 1,317,857.40, 1,976,037.06 and 518,705.76 is: 777,763.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317,857.40 : 1,976,037.06 = 518,705.76 : x
  2. Step 2: Convert to fraction form
    1,317,857.40/1,976,037.06 = 518,705.76/x
  3. Step 3: Cross multiply
    1,317,857.40x = 1,976,037.06 × 518,705.76
  4. Step 4: Simplify right side
    1,317,857.40x = 1,024,981,804,995.47
  5. Step 5: Solve for x
    x = 1,024,981,804,995.47/1,317,857.40
  6. Step 6: Final answer
    x = 777,763.82

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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.