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Finding the Fourth Proportional to 706,665.90, 975,159.25 and 396,539.56

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Solution

The fourth proportional to 706,665.90, 975,159.25 and 396,539.56 is: 547,202.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,665.90 : 975,159.25 = 396,539.56 : x
  2. Step 2: Convert to fraction form
    706,665.90/975,159.25 = 396,539.56/x
  3. Step 3: Cross multiply
    706,665.90x = 975,159.25 × 396,539.56
  4. Step 4: Simplify right side
    706,665.90x = 386,689,219,924.93
  5. Step 5: Solve for x
    x = 386,689,219,924.93/706,665.90
  6. Step 6: Final answer
    x = 547,202.32

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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.