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Finding the Fourth Proportional to 647,998.40, 968,887.20 and 480,036.80

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Solution

The fourth proportional to 647,998.40, 968,887.20 and 480,036.80 is: 717,751.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,998.40 : 968,887.20 = 480,036.80 : x
  2. Step 2: Convert to fraction form
    647,998.40/968,887.20 = 480,036.80/x
  3. Step 3: Cross multiply
    647,998.40x = 968,887.20 × 480,036.80
  4. Step 4: Simplify right side
    647,998.40x = 465,101,511,048.96
  5. Step 5: Solve for x
    x = 465,101,511,048.96/647,998.40
  6. Step 6: Final answer
    x = 717,751.02

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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.