Home / 1,388,599.96-1,915,429.93-917,110.55

Finding the Fourth Proportional to 1,388,599.96, 1,915,429.93 and 917,110.55

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Solution

The fourth proportional to 1,388,599.96, 1,915,429.93 and 917,110.55 is: 1,265,059.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,599.96 : 1,915,429.93 = 917,110.55 : x
  2. Step 2: Convert to fraction form
    1,388,599.96/1,915,429.93 = 917,110.55/x
  3. Step 3: Cross multiply
    1,388,599.96x = 1,915,429.93 × 917,110.55
  4. Step 4: Simplify right side
    1,388,599.96x = 1,756,661,004,243.31
  5. Step 5: Solve for x
    x = 1,756,661,004,243.31/1,388,599.96
  6. Step 6: Final answer
    x = 1,265,059.09

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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.