Home / 639,397,111.40-959,095,667.10-432,772,850.60

Finding the Fourth Proportional to 639,397,111.40, 959,095,667.10 and 432,772,850.60

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Solution

The fourth proportional to 639,397,111.40, 959,095,667.10 and 432,772,850.60 is: 649,159,275.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,397,111.40 : 959,095,667.10 = 432,772,850.60 : x
  2. Step 2: Convert to fraction form
    639,397,111.40/959,095,667.10 = 432,772,850.60/x
  3. Step 3: Cross multiply
    639,397,111.40x = 959,095,667.10 × 432,772,850.60
  4. Step 4: Simplify right side
    639,397,111.40x = 415,070,565,848,975,680
  5. Step 5: Solve for x
    x = 415,070,565,848,975,680/639,397,111.40
  6. Step 6: Final answer
    x = 649,159,275.90

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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.