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Finding the Fourth Proportional to 563,115.92, 777,112.48 and 321,393.60

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Solution

The fourth proportional to 563,115.92, 777,112.48 and 321,393.60 is: 443,530.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,115.92 : 777,112.48 = 321,393.60 : x
  2. Step 2: Convert to fraction form
    563,115.92/777,112.48 = 321,393.60/x
  3. Step 3: Cross multiply
    563,115.92x = 777,112.48 × 321,393.60
  4. Step 4: Simplify right side
    563,115.92x = 249,758,977,552.13
  5. Step 5: Solve for x
    x = 249,758,977,552.13/563,115.92
  6. Step 6: Final answer
    x = 443,530.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.