Home / 983,138.31-1,356,727.32-553,419.54

Finding the Fourth Proportional to 983,138.31, 1,356,727.32 and 553,419.54

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Solution

The fourth proportional to 983,138.31, 1,356,727.32 and 553,419.54 is: 763,716.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    983,138.31 : 1,356,727.32 = 553,419.54 : x
  2. Step 2: Convert to fraction form
    983,138.31/1,356,727.32 = 553,419.54/x
  3. Step 3: Cross multiply
    983,138.31x = 1,356,727.32 × 553,419.54
  4. Step 4: Simplify right side
    983,138.31x = 750,839,409,339.83
  5. Step 5: Solve for x
    x = 750,839,409,339.83/983,138.31
  6. Step 6: Final answer
    x = 763,716.97

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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.