Home / 398,601,617.20-597,902,425.80-243,633,421.60

Finding the Fourth Proportional to 398,601,617.20, 597,902,425.80 and 243,633,421.60

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Solution

The fourth proportional to 398,601,617.20, 597,902,425.80 and 243,633,421.60 is: 365,450,132.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,601,617.20 : 597,902,425.80 = 243,633,421.60 : x
  2. Step 2: Convert to fraction form
    398,601,617.20/597,902,425.80 = 243,633,421.60/x
  3. Step 3: Cross multiply
    398,601,617.20x = 597,902,425.80 × 243,633,421.60
  4. Step 4: Simplify right side
    398,601,617.20x = 145,669,013,780,594,112
  5. Step 5: Solve for x
    x = 145,669,013,780,594,112/398,601,617.20
  6. Step 6: Final answer
    x = 365,450,132.40

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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.