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Finding the Fourth Proportional to 660,694.26, 911,821.89 and 370,354.98

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Solution

The fourth proportional to 660,694.26, 911,821.89 and 370,354.98 is: 511,125.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,694.26 : 911,821.89 = 370,354.98 : x
  2. Step 2: Convert to fraction form
    660,694.26/911,821.89 = 370,354.98/x
  3. Step 3: Cross multiply
    660,694.26x = 911,821.89 × 370,354.98
  4. Step 4: Simplify right side
    660,694.26x = 337,697,777,834.51
  5. Step 5: Solve for x
    x = 337,697,777,834.51/660,694.26
  6. Step 6: Final answer
    x = 511,125.64

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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.