Home / 825,662,465.60-1,238,493,698.40-280,403,999.60

Finding the Fourth Proportional to 825,662,465.60, 1,238,493,698.40 and 280,403,999.60

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Solution

The fourth proportional to 825,662,465.60, 1,238,493,698.40 and 280,403,999.60 is: 420,605,999.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,662,465.60 : 1,238,493,698.40 = 280,403,999.60 : x
  2. Step 2: Convert to fraction form
    825,662,465.60/1,238,493,698.40 = 280,403,999.60/x
  3. Step 3: Cross multiply
    825,662,465.60x = 1,238,493,698.40 × 280,403,999.60
  4. Step 4: Simplify right side
    825,662,465.60x = 347,278,586,510,756,160
  5. Step 5: Solve for x
    x = 347,278,586,510,756,160/825,662,465.60
  6. Step 6: Final answer
    x = 420,605,999.40

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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.