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Finding the Fourth Proportional to 899,745.49, 1,241,649.03 and 491,849.11

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Solution

The fourth proportional to 899,745.49, 1,241,649.03 and 491,849.11 is: 678,751.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,745.49 : 1,241,649.03 = 491,849.11 : x
  2. Step 2: Convert to fraction form
    899,745.49/1,241,649.03 = 491,849.11/x
  3. Step 3: Cross multiply
    899,745.49x = 1,241,649.03 × 491,849.11
  4. Step 4: Simplify right side
    899,745.49x = 610,703,970,337.86
  5. Step 5: Solve for x
    x = 610,703,970,337.86/899,745.49
  6. Step 6: Final answer
    x = 678,751.91

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1.5x scale

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.