Home / 742,883.94-1,025,123.85-420,520.14

Finding the Fourth Proportional to 742,883.94, 1,025,123.85 and 420,520.14

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Solution

The fourth proportional to 742,883.94, 1,025,123.85 and 420,520.14 is: 580,286.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,883.94 : 1,025,123.85 = 420,520.14 : x
  2. Step 2: Convert to fraction form
    742,883.94/1,025,123.85 = 420,520.14/x
  3. Step 3: Cross multiply
    742,883.94x = 1,025,123.85 × 420,520.14
  4. Step 4: Simplify right side
    742,883.94x = 431,085,224,919.34
  5. Step 5: Solve for x
    x = 431,085,224,919.34/742,883.94
  6. Step 6: Final answer
    x = 580,286.10

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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.