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Finding the Fourth Proportional to 604,990.20, 907,922.70 and 338,467.80

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Solution

The fourth proportional to 604,990.20, 907,922.70 and 338,467.80 is: 507,946.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,990.20 : 907,922.70 = 338,467.80 : x
  2. Step 2: Convert to fraction form
    604,990.20/907,922.70 = 338,467.80/x
  3. Step 3: Cross multiply
    604,990.20x = 907,922.70 × 338,467.80
  4. Step 4: Simplify right side
    604,990.20x = 307,302,598,839.06
  5. Step 5: Solve for x
    x = 307,302,598,839.06/604,990.20
  6. Step 6: Final answer
    x = 507,946.41

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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.