Home / 686,311.60-1,029,467.40-213,044.80

Finding the Fourth Proportional to 686,311.60, 1,029,467.40 and 213,044.80

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Solution

The fourth proportional to 686,311.60, 1,029,467.40 and 213,044.80 is: 319,567.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,311.60 : 1,029,467.40 = 213,044.80 : x
  2. Step 2: Convert to fraction form
    686,311.60/1,029,467.40 = 213,044.80/x
  3. Step 3: Cross multiply
    686,311.60x = 1,029,467.40 × 213,044.80
  4. Step 4: Simplify right side
    686,311.60x = 219,322,676,339.52
  5. Step 5: Solve for x
    x = 219,322,676,339.52/686,311.60
  6. Step 6: Final answer
    x = 319,567.20

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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.