Home / 686,575.06-1,029,929.01-213,133.30

Finding the Fourth Proportional to 686,575.06, 1,029,929.01 and 213,133.30

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Solution

The fourth proportional to 686,575.06, 1,029,929.01 and 213,133.30 is: 319,720.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,575.06 : 1,029,929.01 = 213,133.30 : x
  2. Step 2: Convert to fraction form
    686,575.06/1,029,929.01 = 213,133.30/x
  3. Step 3: Cross multiply
    686,575.06x = 1,029,929.01 × 213,133.30
  4. Step 4: Simplify right side
    686,575.06x = 219,512,168,667.03
  5. Step 5: Solve for x
    x = 219,512,168,667.03/686,575.06
  6. Step 6: Final answer
    x = 319,720.57

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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.