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Finding the Fourth Proportional to 711,847.88, 982,347.46 and 385,159.90

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Solution

The fourth proportional to 711,847.88, 982,347.46 and 385,159.90 is: 531,519.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,847.88 : 982,347.46 = 385,159.90 : x
  2. Step 2: Convert to fraction form
    711,847.88/982,347.46 = 385,159.90/x
  3. Step 3: Cross multiply
    711,847.88x = 982,347.46 × 385,159.90
  4. Step 4: Simplify right side
    711,847.88x = 378,360,849,458.85
  5. Step 5: Solve for x
    x = 378,360,849,458.85/711,847.88
  6. Step 6: Final answer
    x = 531,519.25

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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.