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Finding the Fourth Proportional to 624,578.81, 936,728.06 and 287,295.53

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Solution

The fourth proportional to 624,578.81, 936,728.06 and 287,295.53 is: 430,878.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,578.81 : 936,728.06 = 287,295.53 : x
  2. Step 2: Convert to fraction form
    624,578.81/936,728.06 = 287,295.53/x
  3. Step 3: Cross multiply
    624,578.81x = 936,728.06 × 287,295.53
  4. Step 4: Simplify right side
    624,578.81x = 269,117,778,343.45
  5. Step 5: Solve for x
    x = 269,117,778,343.45/624,578.81
  6. Step 6: Final answer
    x = 430,878.82

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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.