Home / 686,533.60-1,029,877.20-213,215.20

Finding the Fourth Proportional to 686,533.60, 1,029,877.20 and 213,215.20

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Solution

The fourth proportional to 686,533.60, 1,029,877.20 and 213,215.20 is: 319,846.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,533.60 : 1,029,877.20 = 213,215.20 : x
  2. Step 2: Convert to fraction form
    686,533.60/1,029,877.20 = 213,215.20/x
  3. Step 3: Cross multiply
    686,533.60x = 1,029,877.20 × 213,215.20
  4. Step 4: Simplify right side
    686,533.60x = 219,585,473,173.44
  5. Step 5: Solve for x
    x = 219,585,473,173.44/686,533.60
  6. Step 6: Final answer
    x = 319,846.65

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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.