Home / 1,690,739-2,536,256.06-428,566.52

Finding the Fourth Proportional to 1,690,739, 2,536,256.06 and 428,566.52

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Solution

The fourth proportional to 1,690,739, 2,536,256.06 and 428,566.52 is: 642,887.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,690,739 : 2,536,256.06 = 428,566.52 : x
  2. Step 2: Convert to fraction form
    1,690,739/2,536,256.06 = 428,566.52/x
  3. Step 3: Cross multiply
    1,690,739x = 2,536,256.06 × 428,566.52
  4. Step 4: Simplify right side
    1,690,739x = 1,086,954,433,463.11
  5. Step 5: Solve for x
    x = 1,086,954,433,463.11/1,690,739
  6. Step 6: Final answer
    x = 642,887.18

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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.