Home / 742,811.16-1,025,142.84-420,578.04

Finding the Fourth Proportional to 742,811.16, 1,025,142.84 and 420,578.04

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Solution

The fourth proportional to 742,811.16, 1,025,142.84 and 420,578.04 is: 580,433.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,811.16 : 1,025,142.84 = 420,578.04 : x
  2. Step 2: Convert to fraction form
    742,811.16/1,025,142.84 = 420,578.04/x
  3. Step 3: Cross multiply
    742,811.16x = 1,025,142.84 × 420,578.04
  4. Step 4: Simplify right side
    742,811.16x = 431,152,566,367.23
  5. Step 5: Solve for x
    x = 431,152,566,367.23/742,811.16
  6. Step 6: Final answer
    x = 580,433.61

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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.