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Finding the Fourth Proportional to 403,553.80, 605,330.70 and 360,008.20

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Solution

The fourth proportional to 403,553.80, 605,330.70 and 360,008.20 is: 540,012.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,553.80 : 605,330.70 = 360,008.20 : x
  2. Step 2: Convert to fraction form
    403,553.80/605,330.70 = 360,008.20/x
  3. Step 3: Cross multiply
    403,553.80x = 605,330.70 × 360,008.20
  4. Step 4: Simplify right side
    403,553.80x = 217,924,015,711.74
  5. Step 5: Solve for x
    x = 217,924,015,711.74/403,553.80
  6. Step 6: Final answer
    x = 540,012.30

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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.