Home / 1,385,880,006.32-2,078,139,764.04-685,562,999.60

Finding the Fourth Proportional to 1,385,880,006.32, 2,078,139,764.04 and 685,562,999.60

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Solution

The fourth proportional to 1,385,880,006.32, 2,078,139,764.04 and 685,562,999.60 is: 1,028,007,997.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,880,006.32 : 2,078,139,764.04 = 685,562,999.60 : x
  2. Step 2: Convert to fraction form
    1,385,880,006.32/2,078,139,764.04 = 685,562,999.60/x
  3. Step 3: Cross multiply
    1,385,880,006.32x = 2,078,139,764.04 × 685,562,999.60
  4. Step 4: Simplify right side
    1,385,880,006.32x = 1,424,695,730,223,298,560
  5. Step 5: Solve for x
    x = 1,424,695,730,223,298,560/1,385,880,006.32
  6. Step 6: Final answer
    x = 1,028,007,997.61

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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.