Home / 1,209,127,467.52-1,669,110,765.51-812,880,265.96

Finding the Fourth Proportional to 1,209,127,467.52, 1,669,110,765.51 and 812,880,265.96

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Solution

The fourth proportional to 1,209,127,467.52, 1,669,110,765.51 and 812,880,265.96 is: 1,122,120,900.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,127,467.52 : 1,669,110,765.51 = 812,880,265.96 : x
  2. Step 2: Convert to fraction form
    1,209,127,467.52/1,669,110,765.51 = 812,880,265.96/x
  3. Step 3: Cross multiply
    1,209,127,467.52x = 1,669,110,765.51 × 812,880,265.96
  4. Step 4: Simplify right side
    1,209,127,467.52x = 1,356,787,202,984,467,968
  5. Step 5: Solve for x
    x = 1,356,787,202,984,467,968/1,209,127,467.52
  6. Step 6: Final answer
    x = 1,122,120,900.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.