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Finding the Fourth Proportional to 710,245.80, 979,884.54 and 419,796.54

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Solution

The fourth proportional to 710,245.80, 979,884.54 and 419,796.54 is: 579,168.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,245.80 : 979,884.54 = 419,796.54 : x
  2. Step 2: Convert to fraction form
    710,245.80/979,884.54 = 419,796.54/x
  3. Step 3: Cross multiply
    710,245.80x = 979,884.54 × 419,796.54
  4. Step 4: Simplify right side
    710,245.80x = 411,352,139,491.49
  5. Step 5: Solve for x
    x = 411,352,139,491.49/710,245.80
  6. Step 6: Final answer
    x = 579,168.70

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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.