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Finding the Fourth Proportional to 550,364.70, 825,547.05 and 485,410.80

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Solution

The fourth proportional to 550,364.70, 825,547.05 and 485,410.80 is: 728,116.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,364.70 : 825,547.05 = 485,410.80 : x
  2. Step 2: Convert to fraction form
    550,364.70/825,547.05 = 485,410.80/x
  3. Step 3: Cross multiply
    550,364.70x = 825,547.05 × 485,410.80
  4. Step 4: Simplify right side
    550,364.70x = 400,729,453,978.14
  5. Step 5: Solve for x
    x = 400,729,453,978.14/550,364.70
  6. Step 6: Final answer
    x = 728,116.20

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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.