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Finding the Fourth Proportional to 534,328.70, 799,743.45 and 415,355.90

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Solution

The fourth proportional to 534,328.70, 799,743.45 and 415,355.90 is: 621,673.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,328.70 : 799,743.45 = 415,355.90 : x
  2. Step 2: Convert to fraction form
    534,328.70/799,743.45 = 415,355.90/x
  3. Step 3: Cross multiply
    534,328.70x = 799,743.45 × 415,355.90
  4. Step 4: Simplify right side
    534,328.70x = 332,178,160,443.86
  5. Step 5: Solve for x
    x = 332,178,160,443.86/534,328.70
  6. Step 6: Final answer
    x = 621,673.81

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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.