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Finding the Fourth Proportional to 660,272.31, 911,170.76 and 373,789.89

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Solution

The fourth proportional to 660,272.31, 911,170.76 and 373,789.89 is: 515,827.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,272.31 : 911,170.76 = 373,789.89 : x
  2. Step 2: Convert to fraction form
    660,272.31/911,170.76 = 373,789.89/x
  3. Step 3: Cross multiply
    660,272.31x = 911,170.76 × 373,789.89
  4. Step 4: Simplify right side
    660,272.31x = 340,586,416,282.67
  5. Step 5: Solve for x
    x = 340,586,416,282.67/660,272.31
  6. Step 6: Final answer
    x = 515,827.20

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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.