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Finding the Fourth Proportional to 1,371,499,290.54, 1,892,826,031.71 and 768,832,687.84

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Solution

The fourth proportional to 1,371,499,290.54, 1,892,826,031.71 and 768,832,687.84 is: 1,061,077,126.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,371,499,290.54 : 1,892,826,031.71 = 768,832,687.84 : x
  2. Step 2: Convert to fraction form
    1,371,499,290.54/1,892,826,031.71 = 768,832,687.84/x
  3. Step 3: Cross multiply
    1,371,499,290.54x = 1,892,826,031.71 × 768,832,687.84
  4. Step 4: Simplify right side
    1,371,499,290.54x = 1,455,266,525,573,120,512
  5. Step 5: Solve for x
    x = 1,455,266,525,573,120,512/1,371,499,290.54
  6. Step 6: Final answer
    x = 1,061,077,126.04

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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.