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Finding the Fourth Proportional to 627,967.40, 866,290.32 and 373,138.16

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Solution

The fourth proportional to 627,967.40, 866,290.32 and 373,138.16 is: 514,749.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,967.40 : 866,290.32 = 373,138.16 : x
  2. Step 2: Convert to fraction form
    627,967.40/866,290.32 = 373,138.16/x
  3. Step 3: Cross multiply
    627,967.40x = 866,290.32 × 373,138.16
  4. Step 4: Simplify right side
    627,967.40x = 323,245,976,030.61
  5. Step 5: Solve for x
    x = 323,245,976,030.61/627,967.40
  6. Step 6: Final answer
    x = 514,749.61

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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.