Home / 920,251,047.39-1,382,419,601.78-570,755,391.60

Finding the Fourth Proportional to 920,251,047.39, 1,382,419,601.78 and 570,755,391.60

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Solution

The fourth proportional to 920,251,047.39, 1,382,419,601.78 and 570,755,391.60 is: 857,400,209.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,251,047.39 : 1,382,419,601.78 = 570,755,391.60 : x
  2. Step 2: Convert to fraction form
    920,251,047.39/1,382,419,601.78 = 570,755,391.60/x
  3. Step 3: Cross multiply
    920,251,047.39x = 1,382,419,601.78 × 570,755,391.60
  4. Step 4: Simplify right side
    920,251,047.39x = 789,023,441,169,459,968
  5. Step 5: Solve for x
    x = 789,023,441,169,459,968/920,251,047.39
  6. Step 6: Final answer
    x = 857,400,209.87

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1.5x scale

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.