Home / 1,086,000.35-1,498,730.96-678,343.55

Finding the Fourth Proportional to 1,086,000.35, 1,498,730.96 and 678,343.55

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Solution

The fourth proportional to 1,086,000.35, 1,498,730.96 and 678,343.55 is: 936,145.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086,000.35 : 1,498,730.96 = 678,343.55 : x
  2. Step 2: Convert to fraction form
    1,086,000.35/1,498,730.96 = 678,343.55/x
  3. Step 3: Cross multiply
    1,086,000.35x = 1,498,730.96 × 678,343.55
  4. Step 4: Simplify right side
    1,086,000.35x = 1,016,654,474,103.51
  5. Step 5: Solve for x
    x = 1,016,654,474,103.51/1,086,000.35
  6. Step 6: Final answer
    x = 936,145.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.