Home / 639,397,106.40-959,095,659.60-432,772,845.60

Finding the Fourth Proportional to 639,397,106.40, 959,095,659.60 and 432,772,845.60

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Solution

The fourth proportional to 639,397,106.40, 959,095,659.60 and 432,772,845.60 is: 649,159,268.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,397,106.40 : 959,095,659.60 = 432,772,845.60 : x
  2. Step 2: Convert to fraction form
    639,397,106.40/959,095,659.60 = 432,772,845.60/x
  3. Step 3: Cross multiply
    639,397,106.40x = 959,095,659.60 × 432,772,845.60
  4. Step 4: Simplify right side
    639,397,106.40x = 415,070,557,807,700,992
  5. Step 5: Solve for x
    x = 415,070,557,807,700,992/639,397,106.40
  6. Step 6: Final answer
    x = 649,159,268.40

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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.