Home / 862,843.40-1,293,746.70-442,939.40

Finding the Fourth Proportional to 862,843.40, 1,293,746.70 and 442,939.40

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Solution

The fourth proportional to 862,843.40, 1,293,746.70 and 442,939.40 is: 664,142.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,843.40 : 1,293,746.70 = 442,939.40 : x
  2. Step 2: Convert to fraction form
    862,843.40/1,293,746.70 = 442,939.40/x
  3. Step 3: Cross multiply
    862,843.40x = 1,293,746.70 × 442,939.40
  4. Step 4: Simplify right side
    862,843.40x = 573,051,387,049.98
  5. Step 5: Solve for x
    x = 573,051,387,049.98/862,843.40
  6. Step 6: Final answer
    x = 664,142.98

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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.