Home / 639,397,105.40-959,095,658.10-432,772,844.60

Finding the Fourth Proportional to 639,397,105.40, 959,095,658.10 and 432,772,844.60

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Solution

The fourth proportional to 639,397,105.40, 959,095,658.10 and 432,772,844.60 is: 649,159,266.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,397,105.40 : 959,095,658.10 = 432,772,844.60 : x
  2. Step 2: Convert to fraction form
    639,397,105.40/959,095,658.10 = 432,772,844.60/x
  3. Step 3: Cross multiply
    639,397,105.40x = 959,095,658.10 × 432,772,844.60
  4. Step 4: Simplify right side
    639,397,105.40x = 415,070,556,199,446,080
  5. Step 5: Solve for x
    x = 415,070,556,199,446,080/639,397,105.40
  6. Step 6: Final answer
    x = 649,159,266.90

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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.