Home / 861,854,839.84-1,288,060,038.43-629,175,521.49

Finding the Fourth Proportional to 861,854,839.84, 1,288,060,038.43 and 629,175,521.49

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Solution

The fourth proportional to 861,854,839.84, 1,288,060,038.43 and 629,175,521.49 is: 940,315,942.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,854,839.84 : 1,288,060,038.43 = 629,175,521.49 : x
  2. Step 2: Convert to fraction form
    861,854,839.84/1,288,060,038.43 = 629,175,521.49/x
  3. Step 3: Cross multiply
    861,854,839.84x = 1,288,060,038.43 × 629,175,521.49
  4. Step 4: Simplify right side
    861,854,839.84x = 810,415,846,389,624,704
  5. Step 5: Solve for x
    x = 810,415,846,389,624,704/861,854,839.84
  6. Step 6: Final answer
    x = 940,315,942.93

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.