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Finding the Fourth Proportional to 899,007.78, 1,240,668.50 and 517,034.91

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Solution

The fourth proportional to 899,007.78, 1,240,668.50 and 517,034.91 is: 713,529.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,007.78 : 1,240,668.50 = 517,034.91 : x
  2. Step 2: Convert to fraction form
    899,007.78/1,240,668.50 = 517,034.91/x
  3. Step 3: Cross multiply
    899,007.78x = 1,240,668.50 × 517,034.91
  4. Step 4: Simplify right side
    899,007.78x = 641,468,923,652.16
  5. Step 5: Solve for x
    x = 641,468,923,652.16/899,007.78
  6. Step 6: Final answer
    x = 713,529.89

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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.