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Finding the Fourth Proportional to 513,908.57, 709,176.03 and 284,475.86

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Solution

The fourth proportional to 513,908.57, 709,176.03 and 284,475.86 is: 392,566.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,908.57 : 709,176.03 = 284,475.86 : x
  2. Step 2: Convert to fraction form
    513,908.57/709,176.03 = 284,475.86/x
  3. Step 3: Cross multiply
    513,908.57x = 709,176.03 × 284,475.86
  4. Step 4: Simplify right side
    513,908.57x = 201,743,461,025.64
  5. Step 5: Solve for x
    x = 201,743,461,025.64/513,908.57
  6. Step 6: Final answer
    x = 392,566.84

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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.