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Finding the Fourth Proportional to 665,245.40, 916,960.14 and 519,796.94

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Solution

The fourth proportional to 665,245.40, 916,960.14 and 519,796.94 is: 716,477.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,245.40 : 916,960.14 = 519,796.94 : x
  2. Step 2: Convert to fraction form
    665,245.40/916,960.14 = 519,796.94/x
  3. Step 3: Cross multiply
    665,245.40x = 916,960.14 × 519,796.94
  4. Step 4: Simplify right side
    665,245.40x = 476,633,070,289.17
  5. Step 5: Solve for x
    x = 476,633,070,289.17/665,245.40
  6. Step 6: Final answer
    x = 716,477.07

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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.