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Finding the Fourth Proportional to 716,884.98, 989,263.62 and 394,533.47

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Solution

The fourth proportional to 716,884.98, 989,263.62 and 394,533.47 is: 544,435.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,884.98 : 989,263.62 = 394,533.47 : x
  2. Step 2: Convert to fraction form
    716,884.98/989,263.62 = 394,533.47/x
  3. Step 3: Cross multiply
    716,884.98x = 989,263.62 × 394,533.47
  4. Step 4: Simplify right side
    716,884.98x = 390,297,603,797.04
  5. Step 5: Solve for x
    x = 390,297,603,797.04/716,884.98
  6. Step 6: Final answer
    x = 544,435.46

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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.