Home / 639,397,203.40-959,095,805.10-432,772,942.60

Finding the Fourth Proportional to 639,397,203.40, 959,095,805.10 and 432,772,942.60

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Solution

The fourth proportional to 639,397,203.40, 959,095,805.10 and 432,772,942.60 is: 649,159,413.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,397,203.40 : 959,095,805.10 = 432,772,942.60 : x
  2. Step 2: Convert to fraction form
    639,397,203.40/959,095,805.10 = 432,772,942.60/x
  3. Step 3: Cross multiply
    639,397,203.40x = 959,095,805.10 × 432,772,942.60
  4. Step 4: Simplify right side
    639,397,203.40x = 415,070,713,808,443,136
  5. Step 5: Solve for x
    x = 415,070,713,808,443,136/639,397,203.40
  6. Step 6: Final answer
    x = 649,159,413.90

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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.