Home / 1,390,273,120.88-1,918,578,164.28-763,782,133.04

Finding the Fourth Proportional to 1,390,273,120.88, 1,918,578,164.28 and 763,782,133.04

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Solution

The fourth proportional to 1,390,273,120.88, 1,918,578,164.28 and 763,782,133.04 is: 1,054,020,034.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,273,120.88 : 1,918,578,164.28 = 763,782,133.04 : x
  2. Step 2: Convert to fraction form
    1,390,273,120.88/1,918,578,164.28 = 763,782,133.04/x
  3. Step 3: Cross multiply
    1,390,273,120.88x = 1,918,578,164.28 × 763,782,133.04
  4. Step 4: Simplify right side
    1,390,273,120.88x = 1,465,375,722,717,745,920
  5. Step 5: Solve for x
    x = 1,465,375,722,717,745,920/1,390,273,120.88
  6. Step 6: Final answer
    x = 1,054,020,034.42

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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.