Home / 1,291,751,168.40-1,937,910,187.80-418,392,838.80

Finding the Fourth Proportional to 1,291,751,168.40, 1,937,910,187.80 and 418,392,838.80

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Solution

The fourth proportional to 1,291,751,168.40, 1,937,910,187.80 and 418,392,838.80 is: 627,681,061.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,751,168.40 : 1,937,910,187.80 = 418,392,838.80 : x
  2. Step 2: Convert to fraction form
    1,291,751,168.40/1,937,910,187.80 = 418,392,838.80/x
  3. Step 3: Cross multiply
    1,291,751,168.40x = 1,937,910,187.80 × 418,392,838.80
  4. Step 4: Simplify right side
    1,291,751,168.40x = 810,807,744,813,083,136
  5. Step 5: Solve for x
    x = 810,807,744,813,083,136/1,291,751,168.40
  6. Step 6: Final answer
    x = 627,681,061.68

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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.