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Finding the Fourth Proportional to 554,663.18, 765,419.58 and 312,968.22

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Solution

The fourth proportional to 554,663.18, 765,419.58 and 312,968.22 is: 431,887.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,663.18 : 765,419.58 = 312,968.22 : x
  2. Step 2: Convert to fraction form
    554,663.18/765,419.58 = 312,968.22/x
  3. Step 3: Cross multiply
    554,663.18x = 765,419.58 × 312,968.22
  4. Step 4: Simplify right side
    554,663.18x = 239,552,003,505.75
  5. Step 5: Solve for x
    x = 239,552,003,505.75/554,663.18
  6. Step 6: Final answer
    x = 431,887.34

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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.