Home / 811,441.60-1,216,903.20-338,012.80

Finding the Fourth Proportional to 811,441.60, 1,216,903.20 and 338,012.80

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Solution

The fourth proportional to 811,441.60, 1,216,903.20 and 338,012.80 is: 506,911.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,441.60 : 1,216,903.20 = 338,012.80 : x
  2. Step 2: Convert to fraction form
    811,441.60/1,216,903.20 = 338,012.80/x
  3. Step 3: Cross multiply
    811,441.60x = 1,216,903.20 × 338,012.80
  4. Step 4: Simplify right side
    811,441.60x = 411,328,857,960.96
  5. Step 5: Solve for x
    x = 411,328,857,960.96/811,441.60
  6. Step 6: Final answer
    x = 506,911.23

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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.