Home / 989,786,390.47-1,365,753,380.65-572,017,995.97

Finding the Fourth Proportional to 989,786,390.47, 1,365,753,380.65 and 572,017,995.97

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Solution

The fourth proportional to 989,786,390.47, 1,365,753,380.65 and 572,017,995.97 is: 789,297,084.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,786,390.47 : 1,365,753,380.65 = 572,017,995.97 : x
  2. Step 2: Convert to fraction form
    989,786,390.47/1,365,753,380.65 = 572,017,995.97/x
  3. Step 3: Cross multiply
    989,786,390.47x = 1,365,753,380.65 × 572,017,995.97
  4. Step 4: Simplify right side
    989,786,390.47x = 781,235,511,783,821,184
  5. Step 5: Solve for x
    x = 781,235,511,783,821,184/989,786,390.47
  6. Step 6: Final answer
    x = 789,297,084.00

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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.