Home / 1,120,694,499.60-1,681,041,749.40-393,683,211.60

Finding the Fourth Proportional to 1,120,694,499.60, 1,681,041,749.40 and 393,683,211.60

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Solution

The fourth proportional to 1,120,694,499.60, 1,681,041,749.40 and 393,683,211.60 is: 590,524,817.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,694,499.60 : 1,681,041,749.40 = 393,683,211.60 : x
  2. Step 2: Convert to fraction form
    1,120,694,499.60/1,681,041,749.40 = 393,683,211.60/x
  3. Step 3: Cross multiply
    1,120,694,499.60x = 1,681,041,749.40 × 393,683,211.60
  4. Step 4: Simplify right side
    1,120,694,499.60x = 661,797,914,737,474,432
  5. Step 5: Solve for x
    x = 661,797,914,737,474,432/1,120,694,499.60
  6. Step 6: Final answer
    x = 590,524,817.40

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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.