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Finding the Fourth Proportional to 713,672.50, 984,868.05 and 395,720.50

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Solution

The fourth proportional to 713,672.50, 984,868.05 and 395,720.50 is: 546,094.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,672.50 : 984,868.05 = 395,720.50 : x
  2. Step 2: Convert to fraction form
    713,672.50/984,868.05 = 395,720.50/x
  3. Step 3: Cross multiply
    713,672.50x = 984,868.05 × 395,720.50
  4. Step 4: Simplify right side
    713,672.50x = 389,732,477,180.03
  5. Step 5: Solve for x
    x = 389,732,477,180.03/713,672.50
  6. Step 6: Final answer
    x = 546,094.29

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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.