Home / 443,675.20-665,512.80-417,431.20

Finding the Fourth Proportional to 443,675.20, 665,512.80 and 417,431.20

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Solution

The fourth proportional to 443,675.20, 665,512.80 and 417,431.20 is: 626,146.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,675.20 : 665,512.80 = 417,431.20 : x
  2. Step 2: Convert to fraction form
    443,675.20/665,512.80 = 417,431.20/x
  3. Step 3: Cross multiply
    443,675.20x = 665,512.80 × 417,431.20
  4. Step 4: Simplify right side
    443,675.20x = 277,805,806,719.36
  5. Step 5: Solve for x
    x = 277,805,806,719.36/443,675.20
  6. Step 6: Final answer
    x = 626,146.80

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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.