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Finding the Fourth Proportional to 603,693.80, 904,503.90 and 393,223.40

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Solution

The fourth proportional to 603,693.80, 904,503.90 and 393,223.40 is: 589,159.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,693.80 : 904,503.90 = 393,223.40 : x
  2. Step 2: Convert to fraction form
    603,693.80/904,503.90 = 393,223.40/x
  3. Step 3: Cross multiply
    603,693.80x = 904,503.90 × 393,223.40
  4. Step 4: Simplify right side
    603,693.80x = 355,672,098,871.26
  5. Step 5: Solve for x
    x = 355,672,098,871.26/603,693.80
  6. Step 6: Final answer
    x = 589,159.77

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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.