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Finding the Fourth Proportional to 1,551,978,275.52, 2,141,410,305.15 and 891,801,007.68

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Solution

The fourth proportional to 1,551,978,275.52, 2,141,410,305.15 and 891,801,007.68 is: 1,230,501,675.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,551,978,275.52 : 2,141,410,305.15 = 891,801,007.68 : x
  2. Step 2: Convert to fraction form
    1,551,978,275.52/2,141,410,305.15 = 891,801,007.68/x
  3. Step 3: Cross multiply
    1,551,978,275.52x = 2,141,410,305.15 × 891,801,007.68
  4. Step 4: Simplify right side
    1,551,978,275.52x = 1,909,711,867,989,106,176
  5. Step 5: Solve for x
    x = 1,909,711,867,989,106,176/1,551,978,275.52
  6. Step 6: Final answer
    x = 1,230,501,675.26

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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.