Home / 742,834.36-1,025,135.94-420,537.88

Finding the Fourth Proportional to 742,834.36, 1,025,135.94 and 420,537.88

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Solution

The fourth proportional to 742,834.36, 1,025,135.94 and 420,537.88 is: 580,356.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,834.36 : 1,025,135.94 = 420,537.88 : x
  2. Step 2: Convert to fraction form
    742,834.36/1,025,135.94 = 420,537.88/x
  3. Step 3: Cross multiply
    742,834.36x = 1,025,135.94 × 420,537.88
  4. Step 4: Simplify right side
    742,834.36x = 431,108,494,919.41
  5. Step 5: Solve for x
    x = 431,108,494,919.41/742,834.36
  6. Step 6: Final answer
    x = 580,356.16

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1.5x scale

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.