Home / 809,236.10-1,213,854.15-508,742.30

Finding the Fourth Proportional to 809,236.10, 1,213,854.15 and 508,742.30

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Solution

The fourth proportional to 809,236.10, 1,213,854.15 and 508,742.30 is: 763,113.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,236.10 : 1,213,854.15 = 508,742.30 : x
  2. Step 2: Convert to fraction form
    809,236.10/1,213,854.15 = 508,742.30/x
  3. Step 3: Cross multiply
    809,236.10x = 1,213,854.15 × 508,742.30
  4. Step 4: Simplify right side
    809,236.10x = 617,538,952,135.55
  5. Step 5: Solve for x
    x = 617,538,952,135.55/809,236.10
  6. Step 6: Final answer
    x = 763,113.45

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Double scale
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Similar ratio
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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.