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Finding the Fourth Proportional to 1,653,978,043.60, 2,282,505,007.72 and 911,448,679.12

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Solution

The fourth proportional to 1,653,978,043.60, 2,282,505,007.72 and 911,448,679.12 is: 1,257,807,612.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,653,978,043.60 : 2,282,505,007.72 = 911,448,679.12 : x
  2. Step 2: Convert to fraction form
    1,653,978,043.60/2,282,505,007.72 = 911,448,679.12/x
  3. Step 3: Cross multiply
    1,653,978,043.60x = 2,282,505,007.72 × 911,448,679.12
  4. Step 4: Simplify right side
    1,653,978,043.60x = 2,080,386,174,371,179,264
  5. Step 5: Solve for x
    x = 2,080,386,174,371,179,264/1,653,978,043.60
  6. Step 6: Final answer
    x = 1,257,807,612.63

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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.