Home / 398,601,000.80-597,901,501.20-111,386,664.80

Finding the Fourth Proportional to 398,601,000.80, 597,901,501.20 and 111,386,664.80

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Solution

The fourth proportional to 398,601,000.80, 597,901,501.20 and 111,386,664.80 is: 167,079,997.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,601,000.80 : 597,901,501.20 = 111,386,664.80 : x
  2. Step 2: Convert to fraction form
    398,601,000.80/597,901,501.20 = 111,386,664.80/x
  3. Step 3: Cross multiply
    398,601,000.80x = 597,901,501.20 × 111,386,664.80
  4. Step 4: Simplify right side
    398,601,000.80x = 66,598,254,097,581,200
  5. Step 5: Solve for x
    x = 66,598,254,097,581,200/398,601,000.80
  6. Step 6: Final answer
    x = 167,079,997.20

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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.