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Finding the Fourth Proportional to 424,820.20, 637,230.30 and 406,618.60

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Solution

The fourth proportional to 424,820.20, 637,230.30 and 406,618.60 is: 609,927.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,820.20 : 637,230.30 = 406,618.60 : x
  2. Step 2: Convert to fraction form
    424,820.20/637,230.30 = 406,618.60/x
  3. Step 3: Cross multiply
    424,820.20x = 637,230.30 × 406,618.60
  4. Step 4: Simplify right side
    424,820.20x = 259,109,692,463.58
  5. Step 5: Solve for x
    x = 259,109,692,463.58/424,820.20
  6. Step 6: Final answer
    x = 609,927.90

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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.