Home / 1,330,556.40-1,996,126.20-431,845.20

Finding the Fourth Proportional to 1,330,556.40, 1,996,126.20 and 431,845.20

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Solution

The fourth proportional to 1,330,556.40, 1,996,126.20 and 431,845.20 is: 647,862.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330,556.40 : 1,996,126.20 = 431,845.20 : x
  2. Step 2: Convert to fraction form
    1,330,556.40/1,996,126.20 = 431,845.20/x
  3. Step 3: Cross multiply
    1,330,556.40x = 1,996,126.20 × 431,845.20
  4. Step 4: Simplify right side
    1,330,556.40x = 862,017,518,064.24
  5. Step 5: Solve for x
    x = 862,017,518,064.24/1,330,556.40
  6. Step 6: Final answer
    x = 647,862.44

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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.