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Finding the Fourth Proportional to 1,000,586,487.03, 1,380,004,220.09 and 879,625,842.86

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Solution

The fourth proportional to 1,000,586,487.03, 1,380,004,220.09 and 879,625,842.86 is: 1,213,175,863.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,000,586,487.03 : 1,380,004,220.09 = 879,625,842.86 : x
  2. Step 2: Convert to fraction form
    1,000,586,487.03/1,380,004,220.09 = 879,625,842.86/x
  3. Step 3: Cross multiply
    1,000,586,487.03x = 1,380,004,220.09 × 879,625,842.86
  4. Step 4: Simplify right side
    1,000,586,487.03x = 1,213,887,375,247,023,104
  5. Step 5: Solve for x
    x = 1,213,887,375,247,023,104/1,000,586,487.03
  6. Step 6: Final answer
    x = 1,213,175,863.34

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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.