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Finding the Fourth Proportional to 470,345.40, 649,224.72 and 300,579.66

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Solution

The fourth proportional to 470,345.40, 649,224.72 and 300,579.66 is: 414,894.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,345.40 : 649,224.72 = 300,579.66 : x
  2. Step 2: Convert to fraction form
    470,345.40/649,224.72 = 300,579.66/x
  3. Step 3: Cross multiply
    470,345.40x = 649,224.72 × 300,579.66
  4. Step 4: Simplify right side
    470,345.40x = 195,143,745,601.20
  5. Step 5: Solve for x
    x = 195,143,745,601.20/470,345.40
  6. Step 6: Final answer
    x = 414,894.56

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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.