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Finding the Fourth Proportional to 555,066.69, 765,992.00 and 300,417.87

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Solution

The fourth proportional to 555,066.69, 765,992.00 and 300,417.87 is: 414,576.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,066.69 : 765,992.00 = 300,417.87 : x
  2. Step 2: Convert to fraction form
    555,066.69/765,992.00 = 300,417.87/x
  3. Step 3: Cross multiply
    555,066.69x = 765,992.00 × 300,417.87
  4. Step 4: Simplify right side
    555,066.69x = 230,117,683,574.95
  5. Step 5: Solve for x
    x = 230,117,683,574.95/555,066.69
  6. Step 6: Final answer
    x = 414,576.64

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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.