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Finding the Fourth Proportional to 684,969.41, 945,243.64 and 379,045.60

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Solution

The fourth proportional to 684,969.41, 945,243.64 and 379,045.60 is: 523,075.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,969.41 : 945,243.64 = 379,045.60 : x
  2. Step 2: Convert to fraction form
    684,969.41/945,243.64 = 379,045.60/x
  3. Step 3: Cross multiply
    684,969.41x = 945,243.64 × 379,045.60
  4. Step 4: Simplify right side
    684,969.41x = 358,290,440,780.68
  5. Step 5: Solve for x
    x = 358,290,440,780.68/684,969.41
  6. Step 6: Final answer
    x = 523,075.10

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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.