Home / 1,260,422,665.40-1,892,580,417.30-687,113,737.40

Finding the Fourth Proportional to 1,260,422,665.40, 1,892,580,417.30 and 687,113,737.40

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Solution

The fourth proportional to 1,260,422,665.40, 1,892,580,417.30 and 687,113,737.40 is: 1,031,731,687.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,422,665.40 : 1,892,580,417.30 = 687,113,737.40 : x
  2. Step 2: Convert to fraction form
    1,260,422,665.40/1,892,580,417.30 = 687,113,737.40/x
  3. Step 3: Cross multiply
    1,260,422,665.40x = 1,892,580,417.30 × 687,113,737.40
  4. Step 4: Simplify right side
    1,260,422,665.40x = 1,300,418,003,861,054,464
  5. Step 5: Solve for x
    x = 1,300,418,003,861,054,464/1,260,422,665.40
  6. Step 6: Final answer
    x = 1,031,731,687.76

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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.