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Finding the Fourth Proportional to 554,665.88, 765,373.04 and 312,934.34

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Solution

The fourth proportional to 554,665.88, 765,373.04 and 312,934.34 is: 431,812.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,665.88 : 765,373.04 = 312,934.34 : x
  2. Step 2: Convert to fraction form
    554,665.88/765,373.04 = 312,934.34/x
  3. Step 3: Cross multiply
    554,665.88x = 765,373.04 × 312,934.34
  4. Step 4: Simplify right side
    554,665.88x = 239,511,507,126.19
  5. Step 5: Solve for x
    x = 239,511,507,126.19/554,665.88
  6. Step 6: Final answer
    x = 431,812.22

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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.