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Finding the Fourth Proportional to 648,001.40, 968,891.70 and 480,039.80

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Solution

The fourth proportional to 648,001.40, 968,891.70 and 480,039.80 is: 717,755.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,001.40 : 968,891.70 = 480,039.80 : x
  2. Step 2: Convert to fraction form
    648,001.40/968,891.70 = 480,039.80/x
  3. Step 3: Cross multiply
    648,001.40x = 968,891.70 × 480,039.80
  4. Step 4: Simplify right side
    648,001.40x = 465,106,577,889.66
  5. Step 5: Solve for x
    x = 465,106,577,889.66/648,001.40
  6. Step 6: Final answer
    x = 717,755.51

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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.