Home / 745,299.92-1,028,479.56-405,767.12

Finding the Fourth Proportional to 745,299.92, 1,028,479.56 and 405,767.12

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Solution

The fourth proportional to 745,299.92, 1,028,479.56 and 405,767.12 is: 559,939.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,299.92 : 1,028,479.56 = 405,767.12 : x
  2. Step 2: Convert to fraction form
    745,299.92/1,028,479.56 = 405,767.12/x
  3. Step 3: Cross multiply
    745,299.92x = 1,028,479.56 × 405,767.12
  4. Step 4: Simplify right side
    745,299.92x = 417,323,189,040.07
  5. Step 5: Solve for x
    x = 417,323,189,040.07/745,299.92
  6. Step 6: Final answer
    x = 559,939.94

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Double scale
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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.