Home / 745,158.75-1,028,319.20-405,629.55

Finding the Fourth Proportional to 745,158.75, 1,028,319.20 and 405,629.55

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Solution

The fourth proportional to 745,158.75, 1,028,319.20 and 405,629.55 is: 559,768.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,158.75 : 1,028,319.20 = 405,629.55 : x
  2. Step 2: Convert to fraction form
    745,158.75/1,028,319.20 = 405,629.55/x
  3. Step 3: Cross multiply
    745,158.75x = 1,028,319.20 × 405,629.55
  4. Step 4: Simplify right side
    745,158.75x = 417,116,652,324.21
  5. Step 5: Solve for x
    x = 417,116,652,324.21/745,158.75
  6. Step 6: Final answer
    x = 559,768.84

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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.