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Finding the Fourth Proportional to 602,289.04, 831,344.99 and 387,429.11

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Solution

The fourth proportional to 602,289.04, 831,344.99 and 387,429.11 is: 534,771.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    602,289.04 : 831,344.99 = 387,429.11 : x
  2. Step 2: Convert to fraction form
    602,289.04/831,344.99 = 387,429.11/x
  3. Step 3: Cross multiply
    602,289.04x = 831,344.99 × 387,429.11
  4. Step 4: Simplify right side
    602,289.04x = 322,087,247,429.69
  5. Step 5: Solve for x
    x = 322,087,247,429.69/602,289.04
  6. Step 6: Final answer
    x = 534,771.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.