Home / 20,389,352,780,778-28,142,542,059,472-13,279,736,175,820

Finding the Fourth Proportional to 20,389,352,780,778, 28,142,542,059,472 and 13,279,736,175,820

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Solution

The fourth proportional to 20,389,352,780,778, 28,142,542,059,472 and 13,279,736,175,820 is: 18,329,445,661,415.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,389,352,780,778 : 28,142,542,059,472 = 13,279,736,175,820 : x
  2. Step 2: Convert to fraction form
    20,389,352,780,778/28,142,542,059,472 = 13,279,736,175,820/x
  3. Step 3: Cross multiply
    20,389,352,780,778x = 28,142,542,059,472 × 13,279,736,175,820
  4. Step 4: Simplify right side
    20,389,352,780,778x = 373,725,533,866,706,230,149,382,144
  5. Step 5: Solve for x
    x = 373,725,533,866,706,230,149,382,144/20,389,352,780,778
  6. Step 6: Final answer
    x = 18,329,445,661,415.74

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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.