Home / 686,859.72-1,030,284.54-213,544.20

Finding the Fourth Proportional to 686,859.72, 1,030,284.54 and 213,544.20

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Solution

The fourth proportional to 686,859.72, 1,030,284.54 and 213,544.20 is: 320,314.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,859.72 : 1,030,284.54 = 213,544.20 : x
  2. Step 2: Convert to fraction form
    686,859.72/1,030,284.54 = 213,544.20/x
  3. Step 3: Cross multiply
    686,859.72x = 1,030,284.54 × 213,544.20
  4. Step 4: Simplify right side
    686,859.72x = 220,011,287,866.67
  5. Step 5: Solve for x
    x = 220,011,287,866.67/686,859.72
  6. Step 6: Final answer
    x = 320,314.73

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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.