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Finding the Fourth Proportional to 884,328.32, 1,220,373.12 and 481,920

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Solution

The fourth proportional to 884,328.32, 1,220,373.12 and 481,920 is: 665,049.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    884,328.32 : 1,220,373.12 = 481,920 : x
  2. Step 2: Convert to fraction form
    884,328.32/1,220,373.12 = 481,920/x
  3. Step 3: Cross multiply
    884,328.32x = 1,220,373.12 × 481,920
  4. Step 4: Simplify right side
    884,328.32x = 588,122,213,990.40
  5. Step 5: Solve for x
    x = 588,122,213,990.40/884,328.32
  6. Step 6: Final answer
    x = 665,049.62

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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.