Home / 1,212,765,100.80-1,815,746,428.80-1,178,752,876.80

Finding the Fourth Proportional to 1,212,765,100.80, 1,815,746,428.80 and 1,178,752,876.80

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Solution

The fourth proportional to 1,212,765,100.80, 1,815,746,428.80 and 1,178,752,876.80 is: 1,764,823,480.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,765,100.80 : 1,815,746,428.80 = 1,178,752,876.80 : x
  2. Step 2: Convert to fraction form
    1,212,765,100.80/1,815,746,428.80 = 1,178,752,876.80/x
  3. Step 3: Cross multiply
    1,212,765,100.80x = 1,815,746,428.80 × 1,178,752,876.80
  4. Step 4: Simplify right side
    1,212,765,100.80x = 2,140,316,326,487,326,208
  5. Step 5: Solve for x
    x = 2,140,316,326,487,326,208/1,212,765,100.80
  6. Step 6: Final answer
    x = 1,764,823,480.72

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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.