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Finding the Fourth Proportional to 660,801.30, 911,924.49 and 374,321.31

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Solution

The fourth proportional to 660,801.30, 911,924.49 and 374,321.31 is: 516,574.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,801.30 : 911,924.49 = 374,321.31 : x
  2. Step 2: Convert to fraction form
    660,801.30/911,924.49 = 374,321.31/x
  3. Step 3: Cross multiply
    660,801.30x = 911,924.49 × 374,321.31
  4. Step 4: Simplify right side
    660,801.30x = 341,352,769,717.88
  5. Step 5: Solve for x
    x = 341,352,769,717.88/660,801.30
  6. Step 6: Final answer
    x = 516,574.00

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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.