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Finding the Fourth Proportional to 536,643.66, 740,406.60 and 321,705.30

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Solution

The fourth proportional to 536,643.66, 740,406.60 and 321,705.30 is: 443,856.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,643.66 : 740,406.60 = 321,705.30 : x
  2. Step 2: Convert to fraction form
    536,643.66/740,406.60 = 321,705.30/x
  3. Step 3: Cross multiply
    536,643.66x = 740,406.60 × 321,705.30
  4. Step 4: Simplify right side
    536,643.66x = 238,192,727,374.98
  5. Step 5: Solve for x
    x = 238,192,727,374.98/536,643.66
  6. Step 6: Final answer
    x = 443,856.41

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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.