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Finding the Fourth Proportional to 713,673.50, 984,869.43 and 395,721.50

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Solution

The fourth proportional to 713,673.50, 984,869.43 and 395,721.50 is: 546,095.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,673.50 : 984,869.43 = 395,721.50 : x
  2. Step 2: Convert to fraction form
    713,673.50/984,869.43 = 395,721.50/x
  3. Step 3: Cross multiply
    713,673.50x = 984,869.43 × 395,721.50
  4. Step 4: Simplify right side
    713,673.50x = 389,734,008,143.75
  5. Step 5: Solve for x
    x = 389,734,008,143.75/713,673.50
  6. Step 6: Final answer
    x = 546,095.67

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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.