Home / 443,974.40-666,010.20-429,977.60

Finding the Fourth Proportional to 443,974.40, 666,010.20 and 429,977.60

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Solution

The fourth proportional to 443,974.40, 666,010.20 and 429,977.60 is: 645,013.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,974.40 : 666,010.20 = 429,977.60 : x
  2. Step 2: Convert to fraction form
    443,974.40/666,010.20 = 429,977.60/x
  3. Step 3: Cross multiply
    443,974.40x = 666,010.20 × 429,977.60
  4. Step 4: Simplify right side
    443,974.40x = 286,369,467,371.52
  5. Step 5: Solve for x
    x = 286,369,467,371.52/443,974.40
  6. Step 6: Final answer
    x = 645,013.47

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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.