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Finding the Fourth Proportional to 403,364.60, 605,046.90 and 270,654.20

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Solution

The fourth proportional to 403,364.60, 605,046.90 and 270,654.20 is: 405,981.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,364.60 : 605,046.90 = 270,654.20 : x
  2. Step 2: Convert to fraction form
    403,364.60/605,046.90 = 270,654.20/x
  3. Step 3: Cross multiply
    403,364.60x = 605,046.90 × 270,654.20
  4. Step 4: Simplify right side
    403,364.60x = 163,758,484,681.98
  5. Step 5: Solve for x
    x = 163,758,484,681.98/403,364.60
  6. Step 6: Final answer
    x = 405,981.30

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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.