Home / 745,299.80-1,028,512.32-405,767.24

Finding the Fourth Proportional to 745,299.80, 1,028,512.32 and 405,767.24

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Solution

The fourth proportional to 745,299.80, 1,028,512.32 and 405,767.24 is: 559,958.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,299.80 : 1,028,512.32 = 405,767.24 : x
  2. Step 2: Convert to fraction form
    745,299.80/1,028,512.32 = 405,767.24/x
  3. Step 3: Cross multiply
    745,299.80x = 1,028,512.32 × 405,767.24
  4. Step 4: Simplify right side
    745,299.80x = 417,336,605,392.40
  5. Step 5: Solve for x
    x = 417,336,605,392.40/745,299.80
  6. Step 6: Final answer
    x = 559,958.03

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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.