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Finding the Fourth Proportional to 821,668.93, 1,133,798.92 and 482,013.25

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Solution

The fourth proportional to 821,668.93, 1,133,798.92 and 482,013.25 is: 665,117.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,668.93 : 1,133,798.92 = 482,013.25 : x
  2. Step 2: Convert to fraction form
    821,668.93/1,133,798.92 = 482,013.25/x
  3. Step 3: Cross multiply
    821,668.93x = 1,133,798.92 × 482,013.25
  4. Step 4: Simplify right side
    821,668.93x = 546,506,102,275.69
  5. Step 5: Solve for x
    x = 546,506,102,275.69/821,668.93
  6. Step 6: Final answer
    x = 665,117.16

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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.