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Finding the Fourth Proportional to 603,428.60, 902,810.10 and 393,476.60

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Solution

The fourth proportional to 603,428.60, 902,810.10 and 393,476.60 is: 588,693.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,428.60 : 902,810.10 = 393,476.60 : x
  2. Step 2: Convert to fraction form
    603,428.60/902,810.10 = 393,476.60/x
  3. Step 3: Cross multiply
    603,428.60x = 902,810.10 × 393,476.60
  4. Step 4: Simplify right side
    603,428.60x = 355,234,648,593.66
  5. Step 5: Solve for x
    x = 355,234,648,593.66/603,428.60
  6. Step 6: Final answer
    x = 588,693.76

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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.