Home / 1,398,285.05-1,929,343.66-817,395.37

Finding the Fourth Proportional to 1,398,285.05, 1,929,343.66 and 817,395.37

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Solution

The fourth proportional to 1,398,285.05, 1,929,343.66 and 817,395.37 is: 1,127,836.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,285.05 : 1,929,343.66 = 817,395.37 : x
  2. Step 2: Convert to fraction form
    1,398,285.05/1,929,343.66 = 817,395.37/x
  3. Step 3: Cross multiply
    1,398,285.05x = 1,929,343.66 × 817,395.37
  4. Step 4: Simplify right side
    1,398,285.05x = 1,577,036,567,956.01
  5. Step 5: Solve for x
    x = 1,577,036,567,956.01/1,398,285.05
  6. Step 6: Final answer
    x = 1,127,836.25

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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.