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Finding the Fourth Proportional to 660,656.89, 911,770.12 and 370,267.03

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Solution

The fourth proportional to 660,656.89, 911,770.12 and 370,267.03 is: 511,004.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,656.89 : 911,770.12 = 370,267.03 : x
  2. Step 2: Convert to fraction form
    660,656.89/911,770.12 = 370,267.03/x
  3. Step 3: Cross multiply
    660,656.89x = 911,770.12 × 370,267.03
  4. Step 4: Simplify right side
    660,656.89x = 337,598,415,977.69
  5. Step 5: Solve for x
    x = 337,598,415,977.69/660,656.89
  6. Step 6: Final answer
    x = 511,004.15

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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.