Home / 380,890,100,405.28-525,628,424,356.46-209,612,031,894.86

Finding the Fourth Proportional to 380,890,100,405.28, 525,628,424,356.46 and 209,612,031,894.86

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Solution

The fourth proportional to 380,890,100,405.28, 525,628,424,356.46 and 209,612,031,894.86 is: 289,264,651,230.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,890,100,405.28 : 525,628,424,356.46 = 209,612,031,894.86 : x
  2. Step 2: Convert to fraction form
    380,890,100,405.28/525,628,424,356.46 = 209,612,031,894.86/x
  3. Step 3: Cross multiply
    380,890,100,405.28x = 525,628,424,356.46 × 209,612,031,894.86
  4. Step 4: Simplify right side
    380,890,100,405.28x = 110,178,042,051,051,292,459,008
  5. Step 5: Solve for x
    x = 110,178,042,051,051,292,459,008/380,890,100,405.28
  6. Step 6: Final answer
    x = 289,264,651,230.94

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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.