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Finding the Fourth Proportional to 624,603.56, 936,765.18 and 287,320.28

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Solution

The fourth proportional to 624,603.56, 936,765.18 and 287,320.28 is: 430,915.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,603.56 : 936,765.18 = 287,320.28 : x
  2. Step 2: Convert to fraction form
    624,603.56/936,765.18 = 287,320.28/x
  3. Step 3: Cross multiply
    624,603.56x = 936,765.18 × 287,320.28
  4. Step 4: Simplify right side
    624,603.56x = 269,151,629,128.03
  5. Step 5: Solve for x
    x = 269,151,629,128.03/624,603.56
  6. Step 6: Final answer
    x = 430,915.94

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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.