Home / 18,858,528,072.30-28,287,792,108.45-7,813,373,256.30

Finding the Fourth Proportional to 18,858,528,072.30, 28,287,792,108.45 and 7,813,373,256.30

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Solution

The fourth proportional to 18,858,528,072.30, 28,287,792,108.45 and 7,813,373,256.30 is: 11,720,059,884.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,858,528,072.30 : 28,287,792,108.45 = 7,813,373,256.30 : x
  2. Step 2: Convert to fraction form
    18,858,528,072.30/28,287,792,108.45 = 7,813,373,256.30/x
  3. Step 3: Cross multiply
    18,858,528,072.30x = 28,287,792,108.45 × 7,813,373,256.30
  4. Step 4: Simplify right side
    18,858,528,072.30x = 221,023,078,339,937,435,648
  5. Step 5: Solve for x
    x = 221,023,078,339,937,435,648/18,858,528,072.30
  6. Step 6: Final answer
    x = 11,720,059,884.45

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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.