Home / 648,031.20-972,046.80-613,039.20

Finding the Fourth Proportional to 648,031.20, 972,046.80 and 613,039.20

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Solution

The fourth proportional to 648,031.20, 972,046.80 and 613,039.20 is: 919,558.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,031.20 : 972,046.80 = 613,039.20 : x
  2. Step 2: Convert to fraction form
    648,031.20/972,046.80 = 613,039.20/x
  3. Step 3: Cross multiply
    648,031.20x = 972,046.80 × 613,039.20
  4. Step 4: Simplify right side
    648,031.20x = 595,902,792,634.56
  5. Step 5: Solve for x
    x = 595,902,792,634.56/648,031.20
  6. Step 6: Final answer
    x = 919,558.80

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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.