Home / 380,890,100,403.77-525,628,424,354.40-209,612,031,893.37

Finding the Fourth Proportional to 380,890,100,403.77, 525,628,424,354.40 and 209,612,031,893.37

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Solution

The fourth proportional to 380,890,100,403.77, 525,628,424,354.40 and 209,612,031,893.37 is: 289,264,651,228.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,890,100,403.77 : 525,628,424,354.40 = 209,612,031,893.37 : x
  2. Step 2: Convert to fraction form
    380,890,100,403.77/525,628,424,354.40 = 209,612,031,893.37/x
  3. Step 3: Cross multiply
    380,890,100,403.77x = 525,628,424,354.40 × 209,612,031,893.37
  4. Step 4: Simplify right side
    380,890,100,403.77x = 110,178,042,049,836,320,030,720
  5. Step 5: Solve for x
    x = 110,178,042,049,836,320,030,720/380,890,100,403.77
  6. Step 6: Final answer
    x = 289,264,651,228.90

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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.