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Finding the Fourth Proportional to 899,367.78, 1,241,124.92 and 491,472.12

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Solution

The fourth proportional to 899,367.78, 1,241,124.92 and 491,472.12 is: 678,230.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,367.78 : 1,241,124.92 = 491,472.12 : x
  2. Step 2: Convert to fraction form
    899,367.78/1,241,124.92 = 491,472.12/x
  3. Step 3: Cross multiply
    899,367.78x = 1,241,124.92 × 491,472.12
  4. Step 4: Simplify right side
    899,367.78x = 609,978,293,159.87
  5. Step 5: Solve for x
    x = 609,978,293,159.87/899,367.78
  6. Step 6: Final answer
    x = 678,230.09

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Double scale
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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.