Home / 745,270.92-1,028,467.38-405,738.36

Finding the Fourth Proportional to 745,270.92, 1,028,467.38 and 405,738.36

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Solution

The fourth proportional to 745,270.92, 1,028,467.38 and 405,738.36 is: 559,915.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,270.92 : 1,028,467.38 = 405,738.36 : x
  2. Step 2: Convert to fraction form
    745,270.92/1,028,467.38 = 405,738.36/x
  3. Step 3: Cross multiply
    745,270.92x = 1,028,467.38 × 405,738.36
  4. Step 4: Simplify right side
    745,270.92x = 417,288,668,074.70
  5. Step 5: Solve for x
    x = 417,288,668,074.70/745,270.92
  6. Step 6: Final answer
    x = 559,915.40

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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.