Home / 911,394.35-1,367,113.40-280,313.63

Finding the Fourth Proportional to 911,394.35, 1,367,113.40 and 280,313.63

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Solution

The fourth proportional to 911,394.35, 1,367,113.40 and 280,313.63 is: 420,477.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,394.35 : 1,367,113.40 = 280,313.63 : x
  2. Step 2: Convert to fraction form
    911,394.35/1,367,113.40 = 280,313.63/x
  3. Step 3: Cross multiply
    911,394.35x = 1,367,113.40 × 280,313.63
  4. Step 4: Simplify right side
    911,394.35x = 383,220,511,538.51
  5. Step 5: Solve for x
    x = 383,220,511,538.51/911,394.35
  6. Step 6: Final answer
    x = 420,477.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.