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Finding the Fourth Proportional to 486,043.58, 670,242.39 and 322,642.44

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Solution

The fourth proportional to 486,043.58, 670,242.39 and 322,642.44 is: 444,916.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,043.58 : 670,242.39 = 322,642.44 : x
  2. Step 2: Convert to fraction form
    486,043.58/670,242.39 = 322,642.44/x
  3. Step 3: Cross multiply
    486,043.58x = 670,242.39 × 322,642.44
  4. Step 4: Simplify right side
    486,043.58x = 216,248,640,101.03
  5. Step 5: Solve for x
    x = 216,248,640,101.03/486,043.58
  6. Step 6: Final answer
    x = 444,916.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.