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Finding the Fourth Proportional to 402,473.40, 603,710.10 and 396,252.60

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Solution

The fourth proportional to 402,473.40, 603,710.10 and 396,252.60 is: 594,378.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,473.40 : 603,710.10 = 396,252.60 : x
  2. Step 2: Convert to fraction form
    402,473.40/603,710.10 = 396,252.60/x
  3. Step 3: Cross multiply
    402,473.40x = 603,710.10 × 396,252.60
  4. Step 4: Simplify right side
    402,473.40x = 239,221,696,771.26
  5. Step 5: Solve for x
    x = 239,221,696,771.26/402,473.40
  6. Step 6: Final answer
    x = 594,378.90

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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.