Home / 612,221,008,048.45-918,331,512,072.70-412,392,389,603.65

Finding the Fourth Proportional to 612,221,008,048.45, 918,331,512,072.70 and 412,392,389,603.65

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Solution

The fourth proportional to 612,221,008,048.45, 918,331,512,072.70 and 412,392,389,603.65 is: 618,588,584,405.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,221,008,048.45 : 918,331,512,072.70 = 412,392,389,603.65 : x
  2. Step 2: Convert to fraction form
    612,221,008,048.45/918,331,512,072.70 = 412,392,389,603.65/x
  3. Step 3: Cross multiply
    612,221,008,048.45x = 918,331,512,072.70 × 412,392,389,603.65
  4. Step 4: Simplify right side
    612,221,008,048.45x = 378,712,926,711,993,902,039,040
  5. Step 5: Solve for x
    x = 378,712,926,711,993,902,039,040/612,221,008,048.45
  6. Step 6: Final answer
    x = 618,588,584,405.49

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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.