Home / 12,638,505,068.16-18,959,009,441.04-4,672,761,900.72

Finding the Fourth Proportional to 12,638,505,068.16, 18,959,009,441.04 and 4,672,761,900.72

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Solution

The fourth proportional to 12,638,505,068.16, 18,959,009,441.04 and 4,672,761,900.72 is: 7,009,605,686.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,638,505,068.16 : 18,959,009,441.04 = 4,672,761,900.72 : x
  2. Step 2: Convert to fraction form
    12,638,505,068.16/18,959,009,441.04 = 4,672,761,900.72/x
  3. Step 3: Cross multiply
    12,638,505,068.16x = 18,959,009,441.04 × 4,672,761,900.72
  4. Step 4: Simplify right side
    12,638,505,068.16x = 88,590,936,991,482,511,360
  5. Step 5: Solve for x
    x = 88,590,936,991,482,511,360/12,638,505,068.16
  6. Step 6: Final answer
    x = 7,009,605,686.25

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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.