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Finding the Fourth Proportional to 603,428.10, 902,809.35 and 393,476.10

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Solution

The fourth proportional to 603,428.10, 902,809.35 and 393,476.10 is: 588,693.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,428.10 : 902,809.35 = 393,476.10 : x
  2. Step 2: Convert to fraction form
    603,428.10/902,809.35 = 393,476.10/x
  3. Step 3: Cross multiply
    603,428.10x = 902,809.35 × 393,476.10
  4. Step 4: Simplify right side
    603,428.10x = 355,233,902,081.54
  5. Step 5: Solve for x
    x = 355,233,902,081.54/603,428.10
  6. Step 6: Final answer
    x = 588,693.01

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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.