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Finding the Fourth Proportional to 1,209,958,659.90, 1,813,426,335.45 and 886,464,618.30

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Solution

The fourth proportional to 1,209,958,659.90, 1,813,426,335.45 and 886,464,618.30 is: 1,328,589,428.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,958,659.90 : 1,813,426,335.45 = 886,464,618.30 : x
  2. Step 2: Convert to fraction form
    1,209,958,659.90/1,813,426,335.45 = 886,464,618.30/x
  3. Step 3: Cross multiply
    1,209,958,659.90x = 1,813,426,335.45 × 886,464,618.30
  4. Step 4: Simplify right side
    1,209,958,659.90x = 1,607,538,284,269,851,904
  5. Step 5: Solve for x
    x = 1,607,538,284,269,851,904/1,209,958,659.90
  6. Step 6: Final answer
    x = 1,328,589,428.34

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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.