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Finding the Fourth Proportional to 490,998.04, 732,912.59 and 421,325.08

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Solution

The fourth proportional to 490,998.04, 732,912.59 and 421,325.08 is: 628,911.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,998.04 : 732,912.59 = 421,325.08 : x
  2. Step 2: Convert to fraction form
    490,998.04/732,912.59 = 421,325.08/x
  3. Step 3: Cross multiply
    490,998.04x = 732,912.59 × 421,325.08
  4. Step 4: Simplify right side
    490,998.04x = 308,794,455,614.76
  5. Step 5: Solve for x
    x = 308,794,455,614.76/490,998.04
  6. Step 6: Final answer
    x = 628,911.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.