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Finding the Fourth Proportional to 489,628.80, 735,998.40 and 461,635.20

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Solution

The fourth proportional to 489,628.80, 735,998.40 and 461,635.20 is: 693,919.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,628.80 : 735,998.40 = 461,635.20 : x
  2. Step 2: Convert to fraction form
    489,628.80/735,998.40 = 461,635.20/x
  3. Step 3: Cross multiply
    489,628.80x = 735,998.40 × 461,635.20
  4. Step 4: Simplify right side
    489,628.80x = 339,762,768,583.68
  5. Step 5: Solve for x
    x = 339,762,768,583.68/489,628.80
  6. Step 6: Final answer
    x = 693,919.08

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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.