Home / 686,777.80-1,030,341.60-213,467.20

Finding the Fourth Proportional to 686,777.80, 1,030,341.60 and 213,467.20

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Solution

The fourth proportional to 686,777.80, 1,030,341.60 and 213,467.20 is: 320,255.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,777.80 : 1,030,341.60 = 213,467.20 : x
  2. Step 2: Convert to fraction form
    686,777.80/1,030,341.60 = 213,467.20/x
  3. Step 3: Cross multiply
    686,777.80x = 1,030,341.60 × 213,467.20
  4. Step 4: Simplify right side
    686,777.80x = 219,944,136,395.52
  5. Step 5: Solve for x
    x = 219,944,136,395.52/686,777.80
  6. Step 6: Final answer
    x = 320,255.16

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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.