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Finding the Fourth Proportional to 817,662.36, 1,128,279.72 and 473,504.88

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Solution

The fourth proportional to 817,662.36, 1,128,279.72 and 473,504.88 is: 653,382.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,662.36 : 1,128,279.72 = 473,504.88 : x
  2. Step 2: Convert to fraction form
    817,662.36/1,128,279.72 = 473,504.88/x
  3. Step 3: Cross multiply
    817,662.36x = 1,128,279.72 × 473,504.88
  4. Step 4: Simplify right side
    817,662.36x = 534,245,953,425.03
  5. Step 5: Solve for x
    x = 534,245,953,425.03/817,662.36
  6. Step 6: Final answer
    x = 653,382.10

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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.