Home / 443,378,009.20-665,067,013.80-432,040,601.20

Finding the Fourth Proportional to 443,378,009.20, 665,067,013.80 and 432,040,601.20

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Solution

The fourth proportional to 443,378,009.20, 665,067,013.80 and 432,040,601.20 is: 648,060,901.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,378,009.20 : 665,067,013.80 = 432,040,601.20 : x
  2. Step 2: Convert to fraction form
    443,378,009.20/665,067,013.80 = 432,040,601.20/x
  3. Step 3: Cross multiply
    443,378,009.20x = 665,067,013.80 × 432,040,601.20
  4. Step 4: Simplify right side
    443,378,009.20x = 287,335,952,480,440,672
  5. Step 5: Solve for x
    x = 287,335,952,480,440,672/443,378,009.20
  6. Step 6: Final answer
    x = 648,060,901.80

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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.