Home / 578,990,597,200.20-868,485,895,800.30-390,916,603,369.80

Finding the Fourth Proportional to 578,990,597,200.20, 868,485,895,800.30 and 390,916,603,369.80

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Solution

The fourth proportional to 578,990,597,200.20, 868,485,895,800.30 and 390,916,603,369.80 is: 586,374,905,054.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,990,597,200.20 : 868,485,895,800.30 = 390,916,603,369.80 : x
  2. Step 2: Convert to fraction form
    578,990,597,200.20/868,485,895,800.30 = 390,916,603,369.80/x
  3. Step 3: Cross multiply
    578,990,597,200.20x = 868,485,895,800.30 × 390,916,603,369.80
  4. Step 4: Simplify right side
    578,990,597,200.20x = 339,505,556,460,831,313,494,016
  5. Step 5: Solve for x
    x = 339,505,556,460,831,313,494,016/578,990,597,200.20
  6. Step 6: Final answer
    x = 586,374,905,054.70

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Double scale
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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.