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Finding the Fourth Proportional to 661,034.40, 912,171.69 and 366,666.36

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Solution

The fourth proportional to 661,034.40, 912,171.69 and 366,666.36 is: 505,968.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,034.40 : 912,171.69 = 366,666.36 : x
  2. Step 2: Convert to fraction form
    661,034.40/912,171.69 = 366,666.36/x
  3. Step 3: Cross multiply
    661,034.40x = 912,171.69 × 366,666.36
  4. Step 4: Simplify right side
    661,034.40x = 334,462,673,267.35
  5. Step 5: Solve for x
    x = 334,462,673,267.35/661,034.40
  6. Step 6: Final answer
    x = 505,968.64

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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.