Home / 489,996,090.90-676,209,915.10-281,190,428.82

Finding the Fourth Proportional to 489,996,090.90, 676,209,915.10 and 281,190,428.82

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Solution

The fourth proportional to 489,996,090.90, 676,209,915.10 and 281,190,428.82 is: 388,051,577.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,996,090.90 : 676,209,915.10 = 281,190,428.82 : x
  2. Step 2: Convert to fraction form
    489,996,090.90/676,209,915.10 = 281,190,428.82/x
  3. Step 3: Cross multiply
    489,996,090.90x = 676,209,915.10 × 281,190,428.82
  4. Step 4: Simplify right side
    489,996,090.90x = 190,143,755,999,304,800
  5. Step 5: Solve for x
    x = 190,143,755,999,304,800/489,996,090.90
  6. Step 6: Final answer
    x = 388,051,577.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.