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Finding the Fourth Proportional to 1,171,978,441.64, 1,755,669,196.70 and 679,657,409

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Solution

The fourth proportional to 1,171,978,441.64, 1,755,669,196.70 and 679,657,409 is: 1,018,153,180.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,171,978,441.64 : 1,755,669,196.70 = 679,657,409 : x
  2. Step 2: Convert to fraction form
    1,171,978,441.64/1,755,669,196.70 = 679,657,409/x
  3. Step 3: Cross multiply
    1,171,978,441.64x = 1,755,669,196.70 × 679,657,409
  4. Step 4: Simplify right side
    1,171,978,441.64x = 1,193,253,577,290,233,344
  5. Step 5: Solve for x
    x = 1,193,253,577,290,233,344/1,171,978,441.64
  6. Step 6: Final answer
    x = 1,018,153,180.04

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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.