Home / 686,776.80-1,030,340.10-213,466.20

Finding the Fourth Proportional to 686,776.80, 1,030,340.10 and 213,466.20

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Solution

The fourth proportional to 686,776.80, 1,030,340.10 and 213,466.20 is: 320,253.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,776.80 : 1,030,340.10 = 213,466.20 : x
  2. Step 2: Convert to fraction form
    686,776.80/1,030,340.10 = 213,466.20/x
  3. Step 3: Cross multiply
    686,776.80x = 1,030,340.10 × 213,466.20
  4. Step 4: Simplify right side
    686,776.80x = 219,942,785,854.62
  5. Step 5: Solve for x
    x = 219,942,785,854.62/686,776.80
  6. Step 6: Final answer
    x = 320,253.66

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1.5x scale

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.