Home / 6,897,120,127.20-10,345,680,190.80-1,989,954,021.60

Finding the Fourth Proportional to 6,897,120,127.20, 10,345,680,190.80 and 1,989,954,021.60

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Solution

The fourth proportional to 6,897,120,127.20, 10,345,680,190.80 and 1,989,954,021.60 is: 2,984,931,032.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,897,120,127.20 : 10,345,680,190.80 = 1,989,954,021.60 : x
  2. Step 2: Convert to fraction form
    6,897,120,127.20/10,345,680,190.80 = 1,989,954,021.60/x
  3. Step 3: Cross multiply
    6,897,120,127.20x = 10,345,680,190.80 × 1,989,954,021.60
  4. Step 4: Simplify right side
    6,897,120,127.20x = 20,587,427,901,869,912,064
  5. Step 5: Solve for x
    x = 20,587,427,901,869,912,064/6,897,120,127.20
  6. Step 6: Final answer
    x = 2,984,931,032.40

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Double scale
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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.