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Finding the Fourth Proportional to 989,472.54, 1,365,474.74 and 536,763.54

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Solution

The fourth proportional to 989,472.54, 1,365,474.74 and 536,763.54 is: 740,735.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,472.54 : 1,365,474.74 = 536,763.54 : x
  2. Step 2: Convert to fraction form
    989,472.54/1,365,474.74 = 536,763.54/x
  3. Step 3: Cross multiply
    989,472.54x = 1,365,474.74 × 536,763.54
  4. Step 4: Simplify right side
    989,472.54x = 732,937,052,539.16
  5. Step 5: Solve for x
    x = 732,937,052,539.16/989,472.54
  6. Step 6: Final answer
    x = 740,735.11

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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.