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Finding the Fourth Proportional to 547,622.40, 820,550.40 and 310,259.20

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Solution

The fourth proportional to 547,622.40, 820,550.40 and 310,259.20 is: 464,888.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,622.40 : 820,550.40 = 310,259.20 : x
  2. Step 2: Convert to fraction form
    547,622.40/820,550.40 = 310,259.20/x
  3. Step 3: Cross multiply
    547,622.40x = 820,550.40 × 310,259.20
  4. Step 4: Simplify right side
    547,622.40x = 254,583,310,663.68
  5. Step 5: Solve for x
    x = 254,583,310,663.68/547,622.40
  6. Step 6: Final answer
    x = 464,888.42

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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.