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Finding the Fourth Proportional to 534,017.80, 800,378.70 and 308,945.80

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Solution

The fourth proportional to 534,017.80, 800,378.70 and 308,945.80 is: 463,043.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,017.80 : 800,378.70 = 308,945.80 : x
  2. Step 2: Convert to fraction form
    534,017.80/800,378.70 = 308,945.80/x
  3. Step 3: Cross multiply
    534,017.80x = 800,378.70 × 308,945.80
  4. Step 4: Simplify right side
    534,017.80x = 247,273,637,774.46
  5. Step 5: Solve for x
    x = 247,273,637,774.46/534,017.80
  6. Step 6: Final answer
    x = 463,043.81

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1.5x scale

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.