Home / 743,048.80-1,025,407.24-420,758.80

Finding the Fourth Proportional to 743,048.80, 1,025,407.24 and 420,758.80

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Solution

The fourth proportional to 743,048.80, 1,025,407.24 and 420,758.80 is: 580,647.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,048.80 : 1,025,407.24 = 420,758.80 : x
  2. Step 2: Convert to fraction form
    743,048.80/1,025,407.24 = 420,758.80/x
  3. Step 3: Cross multiply
    743,048.80x = 1,025,407.24 × 420,758.80
  4. Step 4: Simplify right side
    743,048.80x = 431,449,119,813.71
  5. Step 5: Solve for x
    x = 431,449,119,813.71/743,048.80
  6. Step 6: Final answer
    x = 580,647.09

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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.