Home / 398,406,877.80-597,610,316.70-281,505,604.20

Finding the Fourth Proportional to 398,406,877.80, 597,610,316.70 and 281,505,604.20

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Solution

The fourth proportional to 398,406,877.80, 597,610,316.70 and 281,505,604.20 is: 422,258,406.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,406,877.80 : 597,610,316.70 = 281,505,604.20 : x
  2. Step 2: Convert to fraction form
    398,406,877.80/597,610,316.70 = 281,505,604.20/x
  3. Step 3: Cross multiply
    398,406,877.80x = 597,610,316.70 × 281,505,604.20
  4. Step 4: Simplify right side
    398,406,877.80x = 168,230,653,278,786,848
  5. Step 5: Solve for x
    x = 168,230,653,278,786,848/398,406,877.80
  6. Step 6: Final answer
    x = 422,258,406.30

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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.