Home / 855,643.71-1,283,050.26-428,996.28

Finding the Fourth Proportional to 855,643.71, 1,283,050.26 and 428,996.28

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Solution

The fourth proportional to 855,643.71, 1,283,050.26 and 428,996.28 is: 643,286.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,643.71 : 1,283,050.26 = 428,996.28 : x
  2. Step 2: Convert to fraction form
    855,643.71/1,283,050.26 = 428,996.28/x
  3. Step 3: Cross multiply
    855,643.71x = 1,283,050.26 × 428,996.28
  4. Step 4: Simplify right side
    855,643.71x = 550,423,788,593.03
  5. Step 5: Solve for x
    x = 550,423,788,593.03/855,643.71
  6. Step 6: Final answer
    x = 643,286.20

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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.