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Finding the Fourth Proportional to 553,988.88, 830,687.94 and 287,481.06

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Solution

The fourth proportional to 553,988.88, 830,687.94 and 287,481.06 is: 431,068.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,988.88 : 830,687.94 = 287,481.06 : x
  2. Step 2: Convert to fraction form
    553,988.88/830,687.94 = 287,481.06/x
  3. Step 3: Cross multiply
    553,988.88x = 830,687.94 × 287,481.06
  4. Step 4: Simplify right side
    553,988.88x = 238,807,049,520.42
  5. Step 5: Solve for x
    x = 238,807,049,520.42/553,988.88
  6. Step 6: Final answer
    x = 431,068.31

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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.