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Finding the Fourth Proportional to 1,098,464, 1,515,903.36 and 621,536

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Solution

The fourth proportional to 1,098,464, 1,515,903.36 and 621,536 is: 857,732.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098,464 : 1,515,903.36 = 621,536 : x
  2. Step 2: Convert to fraction form
    1,098,464/1,515,903.36 = 621,536/x
  3. Step 3: Cross multiply
    1,098,464x = 1,515,903.36 × 621,536
  4. Step 4: Simplify right side
    1,098,464x = 942,188,510,760.96
  5. Step 5: Solve for x
    x = 942,188,510,760.96/1,098,464
  6. Step 6: Final answer
    x = 857,732.72

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.