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Finding the Fourth Proportional to 635,719.45, 877,288.62 and 345,328.38

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Solution

The fourth proportional to 635,719.45, 877,288.62 and 345,328.38 is: 476,550.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,719.45 : 877,288.62 = 345,328.38 : x
  2. Step 2: Convert to fraction form
    635,719.45/877,288.62 = 345,328.38/x
  3. Step 3: Cross multiply
    635,719.45x = 877,288.62 × 345,328.38
  4. Step 4: Simplify right side
    635,719.45x = 302,952,657,937.04
  5. Step 5: Solve for x
    x = 302,952,657,937.04/635,719.45
  6. Step 6: Final answer
    x = 476,550.87

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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.