Home / 1,067,904,009.20-1,601,856,013.80-421,587,772.40

Finding the Fourth Proportional to 1,067,904,009.20, 1,601,856,013.80 and 421,587,772.40

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Solution

The fourth proportional to 1,067,904,009.20, 1,601,856,013.80 and 421,587,772.40 is: 632,381,658.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,067,904,009.20 : 1,601,856,013.80 = 421,587,772.40 : x
  2. Step 2: Convert to fraction form
    1,067,904,009.20/1,601,856,013.80 = 421,587,772.40/x
  3. Step 3: Cross multiply
    1,067,904,009.20x = 1,601,856,013.80 × 421,587,772.40
  4. Step 4: Simplify right side
    1,067,904,009.20x = 675,322,908,563,485,568
  5. Step 5: Solve for x
    x = 675,322,908,563,485,568/1,067,904,009.20
  6. Step 6: Final answer
    x = 632,381,658.60

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1.5x scale

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.