Home / 380,890,100,414.92-525,628,424,369.70-209,612,031,904.42

Finding the Fourth Proportional to 380,890,100,414.92, 525,628,424,369.70 and 209,612,031,904.42

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Solution

The fourth proportional to 380,890,100,414.92, 525,628,424,369.70 and 209,612,031,904.42 is: 289,264,651,244.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,890,100,414.92 : 525,628,424,369.70 = 209,612,031,904.42 : x
  2. Step 2: Convert to fraction form
    380,890,100,414.92/525,628,424,369.70 = 209,612,031,904.42/x
  3. Step 3: Cross multiply
    380,890,100,414.92x = 525,628,424,369.70 × 209,612,031,904.42
  4. Step 4: Simplify right side
    380,890,100,414.92x = 110,178,042,058,851,573,825,536
  5. Step 5: Solve for x
    x = 110,178,042,058,851,573,825,536/380,890,100,414.92
  6. Step 6: Final answer
    x = 289,264,651,244.10

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1.5x scale

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.