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Finding the Fourth Proportional to 555,066.14, 765,985.82 and 313,343.51

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Solution

The fourth proportional to 555,066.14, 765,985.82 and 313,343.51 is: 432,410.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,066.14 : 765,985.82 = 313,343.51 : x
  2. Step 2: Convert to fraction form
    555,066.14/765,985.82 = 313,343.51/x
  3. Step 3: Cross multiply
    555,066.14x = 765,985.82 × 313,343.51
  4. Step 4: Simplify right side
    555,066.14x = 240,016,680,052.38
  5. Step 5: Solve for x
    x = 240,016,680,052.38/555,066.14
  6. Step 6: Final answer
    x = 432,410.96

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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.