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Finding the Fourth Proportional to 660,623.54, 911,672.50 and 374,203.09

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Solution

The fourth proportional to 660,623.54, 911,672.50 and 374,203.09 is: 516,407.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,623.54 : 911,672.50 = 374,203.09 : x
  2. Step 2: Convert to fraction form
    660,623.54/911,672.50 = 374,203.09/x
  3. Step 3: Cross multiply
    660,623.54x = 911,672.50 × 374,203.09
  4. Step 4: Simplify right side
    660,623.54x = 341,150,662,009.66
  5. Step 5: Solve for x
    x = 341,150,662,009.66/660,623.54
  6. Step 6: Final answer
    x = 516,407.06

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1.5x scale

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.