Home / 612,221,008,059.70-918,331,512,089.55-412,392,389,614.90

Finding the Fourth Proportional to 612,221,008,059.70, 918,331,512,089.55 and 412,392,389,614.90

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Solution

The fourth proportional to 612,221,008,059.70, 918,331,512,089.55 and 412,392,389,614.90 is: 618,588,584,422.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,221,008,059.70 : 918,331,512,089.55 = 412,392,389,614.90 : x
  2. Step 2: Convert to fraction form
    612,221,008,059.70/918,331,512,089.55 = 412,392,389,614.90/x
  3. Step 3: Cross multiply
    612,221,008,059.70x = 918,331,512,089.55 × 412,392,389,614.90
  4. Step 4: Simplify right side
    612,221,008,059.70x = 378,712,926,729,273,964,756,992
  5. Step 5: Solve for x
    x = 378,712,926,729,273,964,756,992/612,221,008,059.70
  6. Step 6: Final answer
    x = 618,588,584,422.35

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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.