Home / 1,298,428.56-1,791,924.12-717,639.26

Finding the Fourth Proportional to 1,298,428.56, 1,791,924.12 and 717,639.26

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Solution

The fourth proportional to 1,298,428.56, 1,791,924.12 and 717,639.26 is: 990,393.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,428.56 : 1,791,924.12 = 717,639.26 : x
  2. Step 2: Convert to fraction form
    1,298,428.56/1,791,924.12 = 717,639.26/x
  3. Step 3: Cross multiply
    1,298,428.56x = 1,791,924.12 × 717,639.26
  4. Step 4: Simplify right side
    1,298,428.56x = 1,285,955,090,493.33
  5. Step 5: Solve for x
    x = 1,285,955,090,493.33/1,298,428.56
  6. Step 6: Final answer
    x = 990,393.41

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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.