Home / 398,601,386.80-597,902,080.20-355,554,665.80

Finding the Fourth Proportional to 398,601,386.80, 597,902,080.20 and 355,554,665.80

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Solution

The fourth proportional to 398,601,386.80, 597,902,080.20 and 355,554,665.80 is: 533,331,998.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,601,386.80 : 597,902,080.20 = 355,554,665.80 : x
  2. Step 2: Convert to fraction form
    398,601,386.80/597,902,080.20 = 355,554,665.80/x
  3. Step 3: Cross multiply
    398,601,386.80x = 597,902,080.20 × 355,554,665.80
  4. Step 4: Simplify right side
    398,601,386.80x = 212,586,874,306,635,808
  5. Step 5: Solve for x
    x = 212,586,874,306,635,808/398,601,386.80
  6. Step 6: Final answer
    x = 533,331,998.70

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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.