Home / 811,614.56-1,216,630.44-338,435.12

Finding the Fourth Proportional to 811,614.56, 1,216,630.44 and 338,435.12

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Solution

The fourth proportional to 811,614.56, 1,216,630.44 and 338,435.12 is: 507,322.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,614.56 : 1,216,630.44 = 338,435.12 : x
  2. Step 2: Convert to fraction form
    811,614.56/1,216,630.44 = 338,435.12/x
  3. Step 3: Cross multiply
    811,614.56x = 1,216,630.44 × 338,435.12
  4. Step 4: Simplify right side
    811,614.56x = 411,750,468,957.05
  5. Step 5: Solve for x
    x = 411,750,468,957.05/811,614.56
  6. Step 6: Final answer
    x = 507,322.67

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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.