Home / 989,786,572.20-1,365,753,630.60-572,018,177.70

Finding the Fourth Proportional to 989,786,572.20, 1,365,753,630.60 and 572,018,177.70

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Solution

The fourth proportional to 989,786,572.20, 1,365,753,630.60 and 572,018,177.70 is: 789,297,334.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,786,572.20 : 1,365,753,630.60 = 572,018,177.70 : x
  2. Step 2: Convert to fraction form
    989,786,572.20/1,365,753,630.60 = 572,018,177.70/x
  3. Step 3: Cross multiply
    989,786,572.20x = 1,365,753,630.60 × 572,018,177.70
  4. Step 4: Simplify right side
    989,786,572.20x = 781,235,902,962,971,008
  5. Step 5: Solve for x
    x = 781,235,902,962,971,008/989,786,572.20
  6. Step 6: Final answer
    x = 789,297,334.30

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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.