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Finding the Fourth Proportional to 1,438,636,425.15, 2,157,954,637.73 and 1,438,636,425.15

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Solution

The fourth proportional to 1,438,636,425.15, 2,157,954,637.73 and 1,438,636,425.15 is: 2,157,954,637.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,636,425.15 : 2,157,954,637.73 = 1,438,636,425.15 : x
  2. Step 2: Convert to fraction form
    1,438,636,425.15/2,157,954,637.73 = 1,438,636,425.15/x
  3. Step 3: Cross multiply
    1,438,636,425.15x = 2,157,954,637.73 × 1,438,636,425.15
  4. Step 4: Simplify right side
    1,438,636,425.15x = 3,104,512,145,652,557,312
  5. Step 5: Solve for x
    x = 3,104,512,145,652,557,312/1,438,636,425.15
  6. Step 6: Final answer
    x = 2,157,954,637.73

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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.