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Finding the Fourth Proportional to 884,709.60, 1,328,446.80 and 511,461.60

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Solution

The fourth proportional to 884,709.60, 1,328,446.80 and 511,461.60 is: 767,991.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    884,709.60 : 1,328,446.80 = 511,461.60 : x
  2. Step 2: Convert to fraction form
    884,709.60/1,328,446.80 = 511,461.60/x
  3. Step 3: Cross multiply
    884,709.60x = 1,328,446.80 × 511,461.60
  4. Step 4: Simplify right side
    884,709.60x = 679,449,525,842.88
  5. Step 5: Solve for x
    x = 679,449,525,842.88/884,709.60
  6. Step 6: Final answer
    x = 767,991.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.