Home / 1,385,880,007.32-2,078,139,765.54-685,563,000.60

Finding the Fourth Proportional to 1,385,880,007.32, 2,078,139,765.54 and 685,563,000.60

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Solution

The fourth proportional to 1,385,880,007.32, 2,078,139,765.54 and 685,563,000.60 is: 1,028,007,999.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,880,007.32 : 2,078,139,765.54 = 685,563,000.60 : x
  2. Step 2: Convert to fraction form
    1,385,880,007.32/2,078,139,765.54 = 685,563,000.60/x
  3. Step 3: Cross multiply
    1,385,880,007.32x = 2,078,139,765.54 × 685,563,000.60
  4. Step 4: Simplify right side
    1,385,880,007.32x = 1,424,695,733,329,782,784
  5. Step 5: Solve for x
    x = 1,424,695,733,329,782,784/1,385,880,007.32
  6. Step 6: Final answer
    x = 1,028,007,999.11

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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.