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Finding the Fourth Proportional to 807,778.40, 1,211,570.40 and 334,414.40

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Solution

The fourth proportional to 807,778.40, 1,211,570.40 and 334,414.40 is: 501,581.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,778.40 : 1,211,570.40 = 334,414.40 : x
  2. Step 2: Convert to fraction form
    807,778.40/1,211,570.40 = 334,414.40/x
  3. Step 3: Cross multiply
    807,778.40x = 1,211,570.40 × 334,414.40
  4. Step 4: Simplify right side
    807,778.40x = 405,166,588,373.76
  5. Step 5: Solve for x
    x = 405,166,588,373.76/807,778.40
  6. Step 6: Final answer
    x = 501,581.36

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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.