Home / 1,326,240.38-1,989,748.71-427,664.04

Finding the Fourth Proportional to 1,326,240.38, 1,989,748.71 and 427,664.04

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Solution

The fourth proportional to 1,326,240.38, 1,989,748.71 and 427,664.04 is: 641,621.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326,240.38 : 1,989,748.71 = 427,664.04 : x
  2. Step 2: Convert to fraction form
    1,326,240.38/1,989,748.71 = 427,664.04/x
  3. Step 3: Cross multiply
    1,326,240.38x = 1,989,748.71 × 427,664.04
  4. Step 4: Simplify right side
    1,326,240.38x = 850,943,971,903.39
  5. Step 5: Solve for x
    x = 850,943,971,903.39/1,326,240.38
  6. Step 6: Final answer
    x = 641,621.22

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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.