Home / 1,206,405,930.20-1,809,608,895.30-430,076,917.40

Finding the Fourth Proportional to 1,206,405,930.20, 1,809,608,895.30 and 430,076,917.40

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Solution

The fourth proportional to 1,206,405,930.20, 1,809,608,895.30 and 430,076,917.40 is: 645,115,376.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,206,405,930.20 : 1,809,608,895.30 = 430,076,917.40 : x
  2. Step 2: Convert to fraction form
    1,206,405,930.20/1,809,608,895.30 = 430,076,917.40/x
  3. Step 3: Cross multiply
    1,206,405,930.20x = 1,809,608,895.30 × 430,076,917.40
  4. Step 4: Simplify right side
    1,206,405,930.20x = 778,271,015,390,243,328
  5. Step 5: Solve for x
    x = 778,271,015,390,243,328/1,206,405,930.20
  6. Step 6: Final answer
    x = 645,115,376.10

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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.