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Finding the Fourth Proportional to 1,551,978,277.52, 2,141,410,307.90 and 891,801,009.68

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Solution

The fourth proportional to 1,551,978,277.52, 2,141,410,307.90 and 891,801,009.68 is: 1,230,501,678.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,551,978,277.52 : 2,141,410,307.90 = 891,801,009.68 : x
  2. Step 2: Convert to fraction form
    1,551,978,277.52/2,141,410,307.90 = 891,801,009.68/x
  3. Step 3: Cross multiply
    1,551,978,277.52x = 2,141,410,307.90 × 891,801,009.68
  4. Step 4: Simplify right side
    1,551,978,277.52x = 1,909,711,874,724,379,648
  5. Step 5: Solve for x
    x = 1,909,711,874,724,379,648/1,551,978,277.52
  6. Step 6: Final answer
    x = 1,230,501,678.01

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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.