Home / 1,216,814.89-1,679,429.19-781,776.07

Finding the Fourth Proportional to 1,216,814.89, 1,679,429.19 and 781,776.07

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Solution

The fourth proportional to 1,216,814.89, 1,679,429.19 and 781,776.07 is: 1,078,995.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,814.89 : 1,679,429.19 = 781,776.07 : x
  2. Step 2: Convert to fraction form
    1,216,814.89/1,679,429.19 = 781,776.07/x
  3. Step 3: Cross multiply
    1,216,814.89x = 1,679,429.19 × 781,776.07
  4. Step 4: Simplify right side
    1,216,814.89x = 1,312,937,560,181.36
  5. Step 5: Solve for x
    x = 1,312,937,560,181.36/1,216,814.89
  6. Step 6: Final answer
    x = 1,078,995.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.