Home / 686,847.60-1,030,271.40-213,580.80

Finding the Fourth Proportional to 686,847.60, 1,030,271.40 and 213,580.80

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Solution

The fourth proportional to 686,847.60, 1,030,271.40 and 213,580.80 is: 320,371.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,847.60 : 1,030,271.40 = 213,580.80 : x
  2. Step 2: Convert to fraction form
    686,847.60/1,030,271.40 = 213,580.80/x
  3. Step 3: Cross multiply
    686,847.60x = 1,030,271.40 × 213,580.80
  4. Step 4: Simplify right side
    686,847.60x = 220,046,189,829.12
  5. Step 5: Solve for x
    x = 220,046,189,829.12/686,847.60
  6. Step 6: Final answer
    x = 320,371.20

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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.