Home / 300,822,749.80-451,234,124.70-85,384,004.20

Finding the Fourth Proportional to 300,822,749.80, 451,234,124.70 and 85,384,004.20

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Solution

The fourth proportional to 300,822,749.80, 451,234,124.70 and 85,384,004.20 is: 128,076,006.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,822,749.80 : 451,234,124.70 = 85,384,004.20 : x
  2. Step 2: Convert to fraction form
    300,822,749.80/451,234,124.70 = 85,384,004.20/x
  3. Step 3: Cross multiply
    300,822,749.80x = 451,234,124.70 × 85,384,004.20
  4. Step 4: Simplify right side
    300,822,749.80x = 38,528,176,398,568,128
  5. Step 5: Solve for x
    x = 38,528,176,398,568,128/300,822,749.80
  6. Step 6: Final answer
    x = 128,076,006.30

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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.