Home / 745,300.92-1,028,480.94-405,768.12

Finding the Fourth Proportional to 745,300.92, 1,028,480.94 and 405,768.12

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Solution

The fourth proportional to 745,300.92, 1,028,480.94 and 405,768.12 is: 559,941.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,300.92 : 1,028,480.94 = 405,768.12 : x
  2. Step 2: Convert to fraction form
    745,300.92/1,028,480.94 = 405,768.12/x
  3. Step 3: Cross multiply
    745,300.92x = 1,028,480.94 × 405,768.12
  4. Step 4: Simplify right side
    745,300.92x = 417,324,777,479.63
  5. Step 5: Solve for x
    x = 417,324,777,479.63/745,300.92
  6. Step 6: Final answer
    x = 559,941.32

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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.