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Finding the Fourth Proportional to 572,324.98, 790,020.54 and 491,427.58

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Solution

The fourth proportional to 572,324.98, 790,020.54 and 491,427.58 is: 678,352.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,324.98 : 790,020.54 = 491,427.58 : x
  2. Step 2: Convert to fraction form
    572,324.98/790,020.54 = 491,427.58/x
  3. Step 3: Cross multiply
    572,324.98x = 790,020.54 × 491,427.58
  4. Step 4: Simplify right side
    572,324.98x = 388,237,882,122.49
  5. Step 5: Solve for x
    x = 388,237,882,122.49/572,324.98
  6. Step 6: Final answer
    x = 678,352.15

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Double scale
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Similar ratio
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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.