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Finding the Fourth Proportional to 627,632.10, 866,354.40 and 372,980.25

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Solution

The fourth proportional to 627,632.10, 866,354.40 and 372,980.25 is: 514,844.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,632.10 : 866,354.40 = 372,980.25 : x
  2. Step 2: Convert to fraction form
    627,632.10/866,354.40 = 372,980.25/x
  3. Step 3: Cross multiply
    627,632.10x = 866,354.40 × 372,980.25
  4. Step 4: Simplify right side
    627,632.10x = 323,133,080,700.60
  5. Step 5: Solve for x
    x = 323,133,080,700.60/627,632.10
  6. Step 6: Final answer
    x = 514,844.73

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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.