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Finding the Fourth Proportional to 403,749.60, 606,936.60 and 346,012.80

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Solution

The fourth proportional to 403,749.60, 606,936.60 and 346,012.80 is: 520,143.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,749.60 : 606,936.60 = 346,012.80 : x
  2. Step 2: Convert to fraction form
    403,749.60/606,936.60 = 346,012.80/x
  3. Step 3: Cross multiply
    403,749.60x = 606,936.60 × 346,012.80
  4. Step 4: Simplify right side
    403,749.60x = 210,007,832,388.48
  5. Step 5: Solve for x
    x = 210,007,832,388.48/403,749.60
  6. Step 6: Final answer
    x = 520,143.75

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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.