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Finding the Fourth Proportional to 384,673.69, 530,504.40 and 320,355.37

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Solution

The fourth proportional to 384,673.69, 530,504.40 and 320,355.37 is: 441,802.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,673.69 : 530,504.40 = 320,355.37 : x
  2. Step 2: Convert to fraction form
    384,673.69/530,504.40 = 320,355.37/x
  3. Step 3: Cross multiply
    384,673.69x = 530,504.40 × 320,355.37
  4. Step 4: Simplify right side
    384,673.69x = 169,949,933,348.63
  5. Step 5: Solve for x
    x = 169,949,933,348.63/384,673.69
  6. Step 6: Final answer
    x = 441,802.85

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1.5x scale

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.