Home / 721,910,688,001.20-1,082,866,032,001.80-387,179,385,505.20

Finding the Fourth Proportional to 721,910,688,001.20, 1,082,866,032,001.80 and 387,179,385,505.20

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Solution

The fourth proportional to 721,910,688,001.20, 1,082,866,032,001.80 and 387,179,385,505.20 is: 580,769,078,257.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,910,688,001.20 : 1,082,866,032,001.80 = 387,179,385,505.20 : x
  2. Step 2: Convert to fraction form
    721,910,688,001.20/1,082,866,032,001.80 = 387,179,385,505.20/x
  3. Step 3: Cross multiply
    721,910,688,001.20x = 1,082,866,032,001.80 × 387,179,385,505.20
  4. Step 4: Simplify right side
    721,910,688,001.20x = 419,263,404,854,911,212,453,888
  5. Step 5: Solve for x
    x = 419,263,404,854,911,212,453,888/721,910,688,001.20
  6. Step 6: Final answer
    x = 580,769,078,257.80

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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.