Home / 1,188,191,858.40-1,782,287,787.60-314,928,007.20

Finding the Fourth Proportional to 1,188,191,858.40, 1,782,287,787.60 and 314,928,007.20

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Solution

The fourth proportional to 1,188,191,858.40, 1,782,287,787.60 and 314,928,007.20 is: 472,392,010.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,191,858.40 : 1,782,287,787.60 = 314,928,007.20 : x
  2. Step 2: Convert to fraction form
    1,188,191,858.40/1,782,287,787.60 = 314,928,007.20/x
  3. Step 3: Cross multiply
    1,188,191,858.40x = 1,782,287,787.60 × 314,928,007.20
  4. Step 4: Simplify right side
    1,188,191,858.40x = 561,292,341,205,764,800
  5. Step 5: Solve for x
    x = 561,292,341,205,764,800/1,188,191,858.40
  6. Step 6: Final answer
    x = 472,392,010.80

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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.