Home / 989,786,573.70-1,365,753,632.67-572,018,179.20

Finding the Fourth Proportional to 989,786,573.70, 1,365,753,632.67 and 572,018,179.20

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Solution

The fourth proportional to 989,786,573.70, 1,365,753,632.67 and 572,018,179.20 is: 789,297,336.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,786,573.70 : 1,365,753,632.67 = 572,018,179.20 : x
  2. Step 2: Convert to fraction form
    989,786,573.70/1,365,753,632.67 = 572,018,179.20/x
  3. Step 3: Cross multiply
    989,786,573.70x = 1,365,753,632.67 × 572,018,179.20
  4. Step 4: Simplify right side
    989,786,573.70x = 781,235,906,195,679,104
  5. Step 5: Solve for x
    x = 781,235,906,195,679,104/989,786,573.70
  6. Step 6: Final answer
    x = 789,297,336.37

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1.5x scale

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.